PTO Manual of Classification for US patents

PTO Manual of Classification for US patents

What follows are the subclasses from one class of the Manual of Classification for US patents. As you scroll through the list and encounter a class/subclass of interest, you can jump back to the top and retrieve patent titles by entering the class/subclass in the box below.


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363-131 121-55A 14-.5
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Class Number: 264
 Class Title: PLASTIC AND NONMETALLIC ARTICLE SHAPING OR TREATING:
              PROCESSES

Subclass  Subclass
Number    Title

  .5      SHAPING OR TREATING RADIOACTIVE MATERIAL, E.G., FISSIONABLE
           OR FERTILE, ETC.
  1.1     OPTICAL ARTICLE SHAPING OR TREATING
  1.2     .Nonresinous material only, e.g., ceramic, etc.
  1.3     .Light polarizing article or holographic article
  1.4     .Utilizing plasma, electrical, or wave energy
  1.5     .Fiber optic
  1.6     .Continuous or indefinite length
  1.7     .Composite or multiple layer
  1.8     ..Including bifocal
  1.9     ..Reflective
  2.1     .Rotational molding
  2.2     .Changing mold size or shape during molding or with
            shrinkage compensation
  2.3     ..With mold adherence or release
  2.4     ..Preform
  2.5     .Including step of mold making
  2.6     .Nonmechanical aftertreatment, e.g., hydration of contact
            lens, extraction, heat treatment, etc.
  2.7     .Reshaping or treatment of an optical preform
  3.1     EXPLOSIVE OR PROPELLANT ARTICLE SHAPING OR TREATING
  3.2     .Rolling to form sheet or rod
  3.3     .Extrusion to form sheet or rod
  3.4     .Forming or treating particulate material
  3.5     ..By liguid comminuting
  3.6     ...Immersed in liguid
  4       ENCAPSULATING NORMALLY LIQUID MATERIAL
  4.1     .Liquid encapsulation utilizing an emulsion or dispersion
            to form a solid walled microcapsule
  4.3     ..With treatment subsequent to solid wall formation, e.g.,
             coating, hardening, etc.
  4.32    ...Microcapsule wall containing two or more layers
  4.33    ...Microcapsule wall derived from synthetic polymer
  4.4     ..Solid-walled microcapsule formed by cooling molten
             material
  4.6     ..Solid-walled microcapsule formed by physically removing a
             constituent, e.g., evaporation, extraction, etc.
  4.7     ..Solid-walled microcapsule formed by in situ
             polymerization
  5       FORMATION OF SOLID PARTICULATE MATERIAL DIRECTLY FROM MOLTEN OR
           LIQUID MASS, E.G., LIQUID COMMINUTING
  6       .With subsequent uniting of the particles
  7       .Coated particles
  8       .Utilizing centrifugal force or rotating forming zone
  9       .By vibration or agitation
  10      .Utilizing electrical energy
  11      .By impinging plural liquid masses
  12      .By impinging or atomizing with gaseous jet or blast
  13      .By extrusion spraying, or gravity fall through orifice
  14      ..Into moving fluid
  15      SPHEROIDIZING OR ROUNDING OF SOLID PARTICLESS
  16      DENTAL SHAPING TYPE
  17      .Denture forming
  18      ..Forming denture base against preformed teeth
  19      .Tooth forming
  20      ..Shaded layer
  21      SHAPING OR TREATING LUMINESCENT MATERIAL
  22      DIRECT APPLICATION OF ELECTRICAL OR WAVE ENERGY TO WORK
  23      .Sonic or supersonic wave energy
  24      .To convey or align particulate material
  25      .To heat
  26      ..Electro-static
  27      ..By electric current passing directly through work
  28      WITH STEP OF COOLING TO A TEMPERATURE OF ZERO DEGREES C. OR
           BELOW
  29.1    CARBONIZING TO FORM ARTICLE
  29.2    .Filaments
  29.3    .Agglomeration or accretion
  29.4    .From cellulosic material
  29.5    .With carbonizing, then adding carbonizable material and
            re-carbonizing
  29.6    .In specific atmosphere (except vacuum or air)
  29.7    .Controlling varying temperature or plural heating steps
  30      FURNACE LINING FORMATION OR REPAIR
  31      FORMING STRUCTURAL INSTALLATIONS IN SITU
  32      .Arched, domed, or vertical-cylindrical structure
  33      .Repositioning or moving mold to form sequential portions of a
            structure
  34      .Sequentially molding in situ different portions or layers on a
            unitary structure
  35      .Uniting preform member with molding material
  36      REPAIRING OR RESTORING ARTICLES FOR REUSE
  37      RECYCLING OF RECLAIMED OR PURIFIED PROCESS MATERIAL
  38      .Of extrudant receiving bath material
  39      WITH STEP OF CLEANING, POLISHING OR PRECONDITIONING APPARATUS
           FOR USE
  40.1    WITH MEASURING, TESTING OR INSPECTING
  40.2    .Sensing by passage of an electric field-current, or light
            thru molding material
  40.3    .Controlling fluid pressure in direct contact with molding
            material
  40.4    .Measuring a weight or volume, e.g., level-responsive,
            etc.
  40.5    .Positioning of a mold part to form a cavity or controlling
            pressure of a mold part on molding material
  40.6    .Controlling heat transfer with molding material
  40.7    .Controlling rate of movement of molding material or its
            support in a continuous process
  41      PORE FORMING IN SITU, E.G., FOAMING, ETC.
  42      .Of inorganic materials
  43      ..Including vitrification or firing
  44      ...Burning out components to form pores
  45.1    .Composite article making
  45.2    ..Utilizing inflatable or expandable mold part or mold, per
             se
  45.3    ..Incorporating particulate material, fibers or batts in a
             random distribution within a foamed body
  45.4    ..Forming one layer by uniting and expanding expandable
             thermoplastic beads or particless
  45.5    ..Autogenously formed surface layer or base supplies
             surface, e.g., skin forming, etc.
  45.6    ...Foam surface layer produced by surface treatment of
              preformed base material
  45.7    ..Utilizing rotational molding operation
  45.8    ..Forming indefinite length continuous work
  45.9    ...Including extrusion
  46.1    ....With subsequent application of shaping force to form
               final desired shape
  46.2    ...Between at least two moving surfaces
  46.3    ....With roller applied pressure
  46.4    ..Shaping material and uniting to a preform or solidified
             layer
  46.5    ...Uniting spaced preforms or solidified layers by
              introducing foamable material therebetween
  46.6    ...Against inner surface of a hollow preform or solidified
              layer
  46.7    ...Utilizing metal part or reinforcement
  46.8    ...Introducing preform into mold by thermoforming
              operation, e.g., vacuum forming, etc.
  46.9    ...On a preform or solidified layer which is spherical,
              toroidal, or annular
  48      .Including surface treatment of porous body
  49      .By treating occluded solids
  50      .By mechanically introducing gas into material
  51      .By gas forming or expanding
  52      ..Utilizing expansion retarder
  53      ..Liquid to gas phase change
  54      ..Chemical blowing
  55      ...Plural or incremental expansion steps
  56      VITRIFYING OR SINTERING OF PREFORM TO MAKE INORGANIC ARTICLE
  57      .Particular positioning, arranging or conveying article during
            heating
  58      ..Stacking or arranging plural articles
  59      .Simultaneously burning out embedded element to form void
  60      .Forming coated, composite, or nonuniform composition article
  61      ..Forming electrical article or component thereof
  62      ..Shaping followed by article coating
  63      .Utilizing binder to add green strength to preform
  64      .Controlling or directing heat flow within heating or drying
            chamber or against the article
  65      .Controlling pressure or composition of heating atmosphere
  66      .Controlling varying temperature or plural heating steps
  67      .With article cutting, punching or grinding
  68      INCLUDING STEP OF GENERATING HEAT BY FRICTION
  69      TREATMENT OF MATERIAL BY VIBRATING, JARRING OR AGITATING DURING
           SHAPING
  70      .Continuously formed or indefinite length article
  71      .By reciprocating or vibrating mold
  72      ..Diverse, sequential or modulated
  73      RANDOM VARIEGATED COLORING DURING MOLDING
  74      .Of surface portion only
  75      .By extrusion
  76      .By calendering
  77      .By compression in a closed mold cavity
  78      WITH INCORPORATING DYE SUSCEPTIBLE MATERIAL OR DYEING WORKPIECE
  79      WITH APPLICATION OR BARRIER FOR VOLATILE COMPONENT MATERIAL TO
           MOLDED ARTICLE SURFACEE
  80      FLAME CONTACT OR RESHAPING BY HEAT DECOMPOSITION OF WORK
  81      GAS OR VAPOR DEPOSITION OF ARTICLE FORMING MATERIAL ONTO MOLD
           SURFACE
  82      REACTIVE GAS OR VAPOR TREATMENT OF WORK
  83      .Work is organic material
  84      APPLYING EXPLOSIVE FORCE TO MAKE ARTICLE
  85      UTILIZING SPECIAL INERT GASEOUS ATMOSPHERE OR FLUSHING MOLD WITH
           INERT LIQUID
  86      REMOVAL OF LIQUID COMPONENT OR CARRIER THROUGH POROUS MOLD
           SURFACE
  87      .By direct application of vacuum or pneumatic pressure
  500     DIRECT APPLICATION OF FLUID PRESSURE DIFFERENTIAL TO PERMANENTLY
           SHAPE, DISTORT, OR SUSTAIN WORK
  501     .Producing toroidal work, e.g., tire, etc.
  502     ..At least a portion of the external surface being unconfined
             during application of fluid pressure
  503     .Shaping against interior of a forming surface by rotation of
            material or material shaping member
  504     .Perforation by differential fluid pressure; or smoothing,
            scoring, or cutting of green concrete with fluid pressure
  505     .Corrugating
  506     ..Of a tubular preform
  507     ...With axial compression
  508     ...Continuous or indefinite length
  509     .Labeling or embossing indicia
  510     .Producing multilayer work or article
  511     ..Including application of vacuum to hold, support, or sustain a
             preform against which material is molded
  512     ..Producing hollow work or a tubular article
  513     ...Including injection
  514     ...Including extrusion
  515     ....Including forming a hollow article
  516     ...By insertion or application of a preform
  517     .Bulk deposition of particles by differential fluid pressure
  518     ..Continuous or indefinite length
  519     .Differentail temperature conditioning
  520     ..Including application of internal fluid pressure to hollow
             finite length preform to force same into conformity with
             female mold part
  521     ...Heating
  522     ..Starting material is nonhollow planar finite length preform or
             product is planar and of finite length
  523     .Including application of internal fluid pressure to hollow
            finite length parison to expand same into conformity with
            female mold part
  524     ..Production of a sealed product or a filled mercantile
             container
  525     ...Including maintenance or production of internal sterility
  526     ..Including use of vacuum or internal venting of parison to
             remove fluid after application of differential fluid pressure
  527     ..Forming multiple containers in a single mold block from a
             single length of parison
  528     ..Including internal cooling of the article after fluid pressure
             shaping
  529     ..Including plural distinct steps of differential fluid pressure
             induced expansion
  530     ...In diverse female mold cavities
  531     ..Including shaping by mechanical means other than fluidd
             pressure during or subsequent to fluid pressure differential
             shaping
  532     ...Shaping is longitudinal or axial stretching prior to or
              during differential fluid pressure deformation
  533     ...Shaping is neck formation other than by closure of mold for
              body of article
  534     ...Shaping is subsequent to expansion
  535     ..Including heating of previously formed parison to blow molding
             temperature
  536     ..Including removal of flash or sprue
  537     ..Including injection forming of parison or portion thereof
  538     ...Arcuate or rotary movement of parison or workpiece from one
              work station to another
  539     ...Including extrusion
  540     ..Including extrusion
  541     ...Of irregular or varying cross section
  542     ...With movement of parison or workpiece from one work station
              to another
  543     ....Movement is arcuate or rotary
  544     .Starting material is nonhollow planar finite length preform or
            product is finite length
  545     ..Including uniting plural shaped sheets to form hollow work
  546     ..Material shaped is a fabric per se
  547     ..With distinct staged deformation by differential fluid
             pressure
  548     ...Including heating after forcing into contact with a solid
              heating means by differential fluid pressure
  549     ...Including use of male part to stretch heated preform which is
              formed by a female mold which determines shape of work
  550     ..Including use of male part to stretch heated preform which is
             formed by a female mold which determines shape of work
  551     ...Simultaneous formation of plural articles
  552     ..Including curing or vulcanization
  553     ..Including use of vacuum
  554     ...Including use of male mold part which determines the final
              shape of at least a portion of the work
  555     .Production of continuous or running length
  556     ..By casting on to a cooled roll
  557     ..Including liquid contact
  558     ...Including internal liquid contact
  559     ....With downward movement of workpiece
  560     ...With calibration, mandrel forming or with internal guide
  561     ...Contact with liquid coagulant or reactive liquid
  562     ...With immersion in liquid bath
  563     ..Producing a tubular product
  564     ...Including deformation by application of fluid pressure
  565     ....With internal gas bearing or mandrel
  566     ....With application of external pressure or vacuum
  567     .....With reheating of work, e.g., tempering, annealing, etc.
  568     .....Including use of vacuum
  569     .....Including annular fluid contact
  570     .Including hydrostatic or liquid pressure
  571     .Including use of vacuum
  572     .With internal application of fluid pressure
  573     ..To finite length tubular product
  574     ..To form generally spherical product
  101     VACUUM TREATMENT OF WORK
  102     .To degas or prevent gas entrapmentt
  103     WITH TWINING, PLYING, BRAIDING OR TEXTILE FABRIC FORMATION
  104     FORMING ELECTRICAL ARTICLES BY SHAPING ELECTROCONDUCTIVE
           MATERIAL
  105     .Conductive carbon containing
  106     FORMING SOUND GROOVES IN RECORDS
  107     .Die pressing disk type records
  108     ORIENTING OR ALIGNING SOLID PARTICLES IN FLUENT MATRIX MATERIAL
  109     FORMING ARTICLES BY UNITING RANDOMLY ASSOCIATED PARTICLES
  110     .Mica particles
  112     .Stratified or layered articles
  113     ..Plural layers formed by uniting randomly associated particles
  114     .Utilizing centrifugal force
  115     .With liberating or forming of particles
  116     ..From felt or batt
  117     .Agitating to form larger particles, i.e., accretion or
            agglomeration
  118     .With subsequent cutting, grooving, breaking or comminuting
  119     .With reshaping or surface embossing of formed article
  120     .Plural, intermittent pressure applying
  121     .Projecting particles in a moving gas stream
  122     .Utilizing diverse solid particles
  123     .Autogenously or by activation of dry coated particles
  124     ..By activating naturally occurring binder, e.g., cork, etc.
  125     ..Sintering or heat fusing particles
  126     ...Of organic material
  127     ....Fluorocarbon resin
  128     .Liquid binder applied subsequent to particle assembly
  129     WITH PRINTING OR COATING OF WORKPIECE (OUT OF MOLD)
  130     .Anti-stick or adhesion preventing coating
  131     .Coating with particulate material
  132     .Applying indicia or design, e.g., printing, etc.
  133     .Applied to clay, sand or earthen workpiece
  134     .Coating or impregnating workpiece before molding or shaping
            step
  135     ..Molding material against and uniting to the coated or
             impregnated workpiece
  136     ..Impregnation of batt, sheet, or filament
  137     ...Heat settable impregnant
  138     WITH SEVERING, REMOVING MATERIAL FROM PREFORM MECHANICALLY OR
           MECHANICALLY SUBDIVIDING WORKPIECE
  139     .Removing surface portion of composite workpiece to expose
            substrate
  140     .To form particulate product, e.g., flakes, etc.
  141     ..Subsequent to extruding step
  142     ...By cutting at point of extrusion
  143     ...From strands
  144     ..From continuously cast material
  145     .Forming continuous work followed by cutting
  146     ..Slitting longitudinally
  147     ...Of web to form plurality of threads
  148     ..Extruding followed by cutting to length
  149     ...Extruding around moving preform
  150     ...Extruding hollow product
  151     ...With shaping between extruding and cutting steps
  152     .Cutting and uniting cut parts
  153     .Punching article from sheet material
  154     .Making hole or aperture in article
  155     ..By punching or drillingg
  156     ...Plurality of holes
  157     .Dividing work to form plural articles
  158     ..Shaving or slicing sheets from work block
  159     ..Tubular work
  160     ..Sheet or web work
  161     .Flash or sprue removal type
  162     .Surface finishing, e.g., abrading, grinding, etc.
  163     .Simultaneous severing and shaping, or severing while work
            remains on shaping surface
  164     UNCONFINED DRAWING OR EXTENDING OF A PLASTIC MASS TO MAKE
           ARTICLE
  165     FORMING CONTINUOUS OR INDEFINITE LENGTH WORK
  166     .With mold element formation or removal
  167     .Of varying cross-sectional area or with intermittent
            cross-sectional irregularity
  168     .With crimping or crinkling of strands of filaments
  169     .With prevention of equipment fouling accumulations or deposits
  170     ..By chemical additive to molding material or treating bath
  171     .Composite or stratified transversely of length
  172     ..Plural discrete axially aligned preforms
  173     ..Hollow articles
  174     ..Strand-like or filament-like preforms
  175     .By calendering
  176.1   .Shaping by extrusion
  177.1   ..To produce particular cross section, e.g., noncircular,
             etc.
  177.11  ...Nonresinous material only, e.g., ceramic, soap,
              cellulose, glue, etc.
  177.12  ...Honeycomb
  177.13  ...Filament, e.g., T-configured, dog-bone, trilobal, etc.
  177.14  ....Hollow or tubular work produced
  177.15  .....Capillary passages, e.g., pen nibs, writing tips,
                etc.
  177.16  ...Die configuration (other than fixed orifice shape)
  177.17  ...Processing or treatment after extrusion, e.g., support,
              guide, etc.
  177.18  ....Chemical
  177.19  ....Temperature specified (other than ambient)
  177.2   ...With reinforcement, filler or additive
  178 R   ..Into a liquid bath
  179     ...With purifying or replenishing of bath
  180     ...Liquid of bath is in motion
  181     ....With stretching in bath of extruded article
  182     ...Polyacrylonitrile containing extrudant
  183     ...Reactive bath
  184     ....Synthetic resin containing extrudant
  185     .....Polyvinyl alcohol containing
  186     ....Carbohydrate containing extrudant
  187     .....Cellulose derivatives
  188     ......Viscose
  189     .......Bath contains organic compound
  190     ........Carbohydrate or protein
  191     .......Extrudant contains added organic compound
  192     ........Sulfur containing organic compound
  193     ........Polyethers, e.g., oxyalkylated compounds, etc.
  194     ........Nitrogen containing organic compound
  195     .......Subsequent chemical treatment of formed articles
  196     .......Plural step coagulating or regeneratingg
  197     ........With stretching
  198     .......Mechanical treatment of articles, e.g., stretching,
                  folding, deforming, etc.
  199     ......Cupro ammonium cellulose
  200     ......Cellulose acetate
  201     ....Natural rubber containing extrudant
  202     ....Protein containing extrudant
  203     ...Liquid is solvent extractive
  178 F   ...Filaments
  204     ..Solidifying by evaporation of liquid solvent or liquid
             carrier
  205     ...Synthetic resin containing spinning solutions
  206     ....Polyacrylonitrile
  207     ...Cellulose derivative
  208     ....With stretching of formed article
  209.1   ..Hollow article
  209.2   ...Including rotational or translational movement of a
              material shaping member
  209.3   ...Reshaping product (extrudate) subsequent to extrusion
  209.4   ....Sizing to desired dimension
  209.5   .....Stretching extruded material
  209.6   ...Curing or polymerizing operation during extrusion, e.g.,
              cross-linking, vulcanizing, etc.
  209.7   ...At least two distinct operational temperatures employed
              during the extrusion operation
  209.8   ...Providing special flow channel feature, e.g., varying
              dimension of flow channel or varying direction of flow of
              material in the extruder, etc.
  210.1   ..And reshaping
  210.2   ...Including a step other than application or removal of
              tension
  210.3   ...With application of agent other than water or air to
              workpiece
  210.4   ....During or after final shape change
  210.5   ...With temperature gradient across cross section of
              workpiece or heat treatment after all shaping
  210.6   ...With processing before extrusion or inclusion of
              additive
  210.7   ...Plural stretching steps or stages
  210.8   ...Of filament
  211     ..Utilizing added agent, e.g., flux, plasticizer, dispersing
             agent, etc.
  211.1   ..Centripetal extrusion
  211.11  ..Nonresinous material only, e.g., ceramic, soap,
             cellulose, etc.
  211.12  ..Processing or treatment after extrusion
  211.13  ...Contact of extrudate with fluid other than ambient air
  211.14  ....Filament (e.g., fiber, etc.)
  211.15  .....Plural treatment stages of zones
  211.16  .....Extractive fluid or effects reaction
  211.17  .....Heating
  211.18  ....Plural treatment stages or zones
  211.19  ....Extractive fluid or effects reaction
  211.2   ....Heating
  211.21  ..Screw extruder or screw feeder device
  211.22  ...Filament (e.g., fiber, etc.)
  211.23  ...Plural screws, plural extruders, or plural stage
              extruderr
  211.24  ..Curing or polymerization in the extruder (includes
             incomplete polymerization or curing, or coagulating rubber)
  212     .By casting liquids on a solid supporting or shaping surface
  213     ..Utilizing surface parting, anti-stick or release agent
  214     ..To form nonplanar article or surface
  215     ..By dipping the forming surface into the forming material
  216     ..Rubber or synthetic resin containing liquid
  217     ..Carbohydrate containing liquid
  218     ...Solidifying by applied reagent
  219     WITH STEP OF MAKING MOLD OR MOLD SHAPING PER SE
  220     .Utilizing surface to be reproduced as an impression pattern
  221     ..With destruction of pattern or mold to dissociate
  222     ..Anatomical surface, i.e., using body area as an impression
             pattern
  223     ...Pedal
  224     ..With flexible inversion of a forming surface
  225     ..Forming mold from fluent material
  226     ...With initial molding or treating of a surface to be
              reproduced
  227     ....Developing a surface negative and then a surface positive
               mold
  228     FORMING STRESSED CONCRETE ARTICLES
  229     PRESTRESSING SOLID BODY AND UNITING IN STRESSED CONDITION
  230     UTILIZING HEAT RELEASABLE STRESS TO RESHAPE SOLID WORKPIECE,
           E.G., ELASTIC MEMORY, ETC.
  231     APPLYING TENSILE STRESS TO WORKPIECE DURING HEAT CURING
  232     DISPARATE TREATMENT OF ARTICLE SUBSEQUENT TO WORKING, MOLDING OR
           SHAPING
  233     .Washing of article
  234     .Effecting temperature change
  235     ..Annealing
  235.6   ...After stretching running or indefinite length work
  235.8   ....Biaxial stretching of film
  236     ..Completing vulcanization or polymerization
  237     ..Cooling
  238     COMBINED
  239     MECHANICAL SHAPING OR MOLDING TO FORM OR REFORM SHAPED ARTICLE
  240     .Separately introducing reacting materials into mold
  241     .To produce composite, plural part or multilayered article
  242     ..Joining parts for relative movement
  243     ..Bristled or tufted article making
  244     ..Uniting shoe part to upper
  245     ..Multicolored surface
  246     ...One component self-sustaining prior to compositing
  247     ....Positioning component in mold
  248     ..Fusion bonding of preformed bodies and shaping at joint only
  249     ..Mechanically securing parts together by reshaping joint
             portion only
  250     ..By separately molding different article portions
  251     ...Spaced molded portions interconnected by solid preform
  252     ....Molding portions along sheet edge
  253     ....Building unit having spaced walls
  254     ...Separate stage covering of different preform areas
  255     ...Sequential formation of portion on same mold or a preform
              surface
  256     ....Utilizing clay, sand or calcareous slurry
  257     ..One component is a fibrous or textile sheet, web or batt
  258     ...Joining a plurality of superposed fibrous or textile layerss
  259     ..Shaping material and uniting to a preform
  260     ...Co-molding plural fluent materials and uniting to preform
  261     ...Uniting spaced preforms, by introducing fluent material
              therebetween
  262     ....Concentric preforms
  263     ...To unite independent contacting preforms
  264     ...Preventing adherence of shaped material to preform
  265     ...Conditioning or treatment of preform
  266     ...Simultaneously shaping material and reshaping preform
  267     ...Against inner surface of hollow preform
  268     ....Cap or cup-like preform, e.g., container closure, etc.
  269     ....Cavity lining type
  270     .....Utilizing centrifugal force, e.g., pipe lining, etc.
  271.1   ...Preform embedded in or surrounded by shaped material
  272.11  ....Electrical component encapsulating
  272.12  .....Nonresinous encapsulant
  272.13  .....With curing procedure, or procedure or treatment to
                compensate for differential expansion
  272.14  .....Plural electrical components
  272.15  .....With component positioning procedure or incorporation
                of article positioning means
  272.16  .....Transducer, or electric lamp or space discharge
                device
  272.17  .....Semiconductor or barrier layer device, e.g.,
                integrated circuit, transistor, etc.
  272.18  .....Condenser or resistor
  272.19  .....Dynamoelectric machine, electromagnet, transformer
                inductors or coils
  272.2   ......Motor or part encapsulated
  272.21  .....Battery or part encapsulated
  273     ....Shaped material extends through holes in preform
  274     ....Preform particularly provided with means to provide
               interlock with shaped material
  275     ....Positioning or maintaining position of preform relative to
               mold surface
  276     .....Preventing flash
  277     .....Maintaining preforms in spaced relationship
  278     .....By removable means
  279     ....Applying fluent material to preform
  279.1   ....Preform is completely surrounded by shaped material
  280     .Reshaping running or indefinite-length work
  281     ..Longitudinally advanced coiling (nonplanar)
  282     ..Creping or crinkling
  283     ...By doctoring from drum
  284     ..Deforming the surface only
  285     ..Bending
  286     ...Corrugating
  287     ....And subsequent reshaping of corrugated material
  288.4   ..Stretching by applying tension
  288.8   ...Nonuniform product, e.g., porous, etc., or with
              tensioning before application of heat
  289.3   ...With treatment other than heating before stretching
  289.6   ...With shrinking or with liquid contact during or after
              stretching
  290.2   ...Biaxial or transverse to travel direction
  290.5   ...Of filament
  290.7   ....Including contact with mechanism in stretch path, e.g.,
               snubbing, etc..
  291     .Stretching or stretch forming
  292     ..By drawing over a form
  293     .Deforming the surface only
  294     .Plural sequential shaping or molding steps on same workpiece
  295     ..Molding followed by bending or twisting
  296     ..One step reshapes portion only of article
  297.1   .Forming plural articles
  297.2   ..Including introducing material under pressure into a
             closed mold cavity, e.g., injection molding, etc.
  297.3   ...With plural molds on belt or turntable
  297.4   ..Forming multiple stacked or nested articles or including
             multi-layer pressing
  297.5   ..Reshaping or treatment of a preform, e.g., vulcanizing,
             etc.
  297.6   ..With plural molds on a moving surface
  297.7   ...With linear movement of the molds
  297.8   ..Simultaneous formation of plural articles
  297.9   ...Of primarily inorganic material, e.g., concrete or
              ceramic, etc.
  298     .By casting on a liquid surface
  299     .Shaping against forming surface, e.g., casting, die shaping,
            etc.
  300     ..Utilizing release agent in molding material
  301     ..Accretion from bulk
  302     ...Slush casting type
  303     ...Accretion of varying wall thickness or control of accretion
              by compound movement of form
  304     ...Facilitating removal of article from form
  305     ...Successive dipping steps into same material
  306     ...Conditioning or treating material or form to effect
              deposition
  307     ...Treating accreted material on form with added agent or
              reactant
  308     ..Incremental layer molding type
  309     ..Spraying or flinging material against a shaping surface
  310     ..By rotation of material or material shaping member
  311     ...Utilizing centrifugal force
  312     ...Inner relatively rotating member to form hollow article
  313     ..Utilizing a flexible, deformable or destructable molding
             surface or material
  314     ...Utilizing fluid-expansible mold
  315     ....Toroidal mold bag
  316     ...Utilizing sheet-like material
  317     ...Removing mold by destruction
  318     ..Molding trapped undercut article portion
  319     ..Applying heat or pressure
  320     ...Reshaping solid work or introducing solid work into mold
              cavity
  321     ....Sponge-like or foamed work
  322     ....Initially softening workpiece
  323     ....Sliding motion between material and mold surface (extruding
               finite articles)
  324     ....Woven or felted sheet-form work
  325     ....Utilizing closed mold cavity
  326     .....Toroidal work, e.g., tire, etc.
  327     ...Differential heating or cooling in mold
  328.1   ...Introducing material under pressure into a closed mold
              cavity, e.g., injection molding, etc..
  328.2   ....Material is nonthermoplastic
  328.3   .....Toroidal work, e.g., tire, etc.
  328.4   .....Utilizing a transfer chamber
  328.5   ......With preformed charge
  328.6   .....Including mixing of reactants
  328.7   ....Including changing mold size or shape during injection
               or between multiple stages of injection
  328.8   ....With multiple injectors, mold cavities, or multiple
               steps of injection of material
  328.9   ....Including operation or design to minimize formation of
               gate, sprue, or flash
  328.11  ....Including movement of mold relative to injector
  328.12  ....Including specified direction or condition of flow in
               mold
  328.13  ....Including injection at two or more pressures
  328.14  ....With heating or cooling
  328.15  .....Of injection nozzle
  328.16  .....Of mold
  328.17  ....Pretreatment or preparation of charge material
  328.18  .....Mixing of filler, dye, or pigment
  328.19  .....Including feeding to accumulator
  330     ...Organic material shaping
  331.11  ....Synthetic resin containing
  331.12  .....Polymer having heterocyclic group or polymer derived
                from monomer having heterocyclic group except heterocyclic
                derived solely from carboxylic acid, i.e., cyclic imide,
                lactam, lactone, or anhydride
  331.13  .....Polymer derived from monomer having at least two
                ethylenic groups, e.g., ABS rubber, chloroprene, etc., or
                with natural rubber
  331.14  .....Fluorine
  331.15  .....Ethylenically unsaturated polymer or polymer derived
                from ethylenically unsaturated monomer
  331.16  ......Nitrogen containing polymer
  331.17  ......Hydrocarbon polymer
  331.18  ......Carboxylic acid or derivative, e.g., acrylic, etc.
  331.19  .....Nitrogen containing, e.g., polyamide, polyurethane,
                etc.
  331.21  .....Carboxylic acid or derivative
  331.22  .....Polymer derived from aldehyde
  332     ...Fusing or melting inorganic material
  333     ...Inorganic hydraulic settable material shaping
  334     ..Article or material ejecting, core or mold stripping or
             separating
  335     ...By direct fluid pressure or pressure differential
  336     ...Ejecting or stripping before full set or cure of work
  337     ..Utilizing particular mold material
  338     ...Coating or lining
  339     .Bending or twisting of work
  340     TREATING SHAPED OR SOLID ARTICLE
  341     .Solvent polishing type
  342 R   .To shrink
  342 RE  ..Relaxation of running or indefinite length work
  343     .To swell or plasticize
  344     .To remove entrained material from article
  345     .By a temperature change
  346     ..To anneal or temper
  347     ..To complete vulcanization or polymerizationn
  348     ..To cool
  349     MISCELLANEOUS
  *       ******************************
  *       DIGESTS
  *       ******************************
  DIG 1   Methods of blow-molding cellular containers
  DIG 2   Molding cellular aldehyde resins
  DIG 3   Molding cellular pvc-isocyanate resins
  DIG 4   Molding and forming bendable and flexible product from
           rigid preform
  DIG 5   Use of one or more blowing agents together
  DIG 6   Molding microballoons and binder
  DIG 7   Binding and molding cellular particles
  DIG 8   Fibrillating cellular materials
  DIG 9   Pre-expansion of foamed polystyrene
  DIG 10  Foamed polystyrene mold filling
  DIG 11  Molding styropor using steam probes -batch
  DIG 12  Molding styropor using steam probes continuous
  DIG 13  Cell size and distribution control while molding a foam
  DIG 14  Forming integral skin on a foamed product
  DIG 15  Aging of foamed resin products
  DIG 16  Molding foamed polypropylene articles
  DIG 17  Molding a foam containing a filler
  DIG 18  Cross-linking a thermoplastic linear foam during molding
  DIG 19  Inorganic fiber
  DIG 20  Tar bonded
  DIG 25  Metallic oxide
  DIG 26  Composite fibers made of two or more materials
  DIG 27  Process of spinning viscose where viscose has high degree
           or polymerization
  DIG 28  Stretching filaments in gas or steam
  DIG 29  Mixed resin filaments
  DIG 30  Use of anatomy in making a mold or using said mold
  DIG 31  Processes of making tile and tile-like surfaces
  DIG 32  Processes in molding using asbestos or asphalt
  DIG 33  Blow-molding articles of nonuniform thickness
  DIG 34  Processes and molds for making buttons
  DIG 35  Use of Ca O with refractories
  DIG 36  Process of making metal-ceramics
  DIG 37  Processes and molds for making capsules
  DIG 38  Making film or tubes from casein
  DIG 39  Treatment of clay before and after molding
  DIG 40  Processes of coiling plastics
  DIG 41  Processes of molding collapsible tubes
  DIG 42  Processes of molding involving cross linking
  DIG 43  Processes of curing clay and concrete materials
  DIG 44  Using destructible molds or cores in molding processes
  DIG 45  Molding using an electrical force
  DIG 46  Molding using an electrical heat
  DIG 47  Processes of splitting film, webs or sheets
  DIG 48  Processes of making filters
  DIG 49  Processes of using fly ash
  DIG 50  Use of fluid pressure in molding
  DIG 51  Use of fluidized bed in molding
  DIG 52  Processes of making corrugated tubes for gas mask
  DIG 53  Processes of using glass filler in molding process
  DIG 54  Processes in making insulators
  DIG 55  Processes for making jewelryy
  DIG 56  Processes of molding lactams
  DIG 57  Processes of forming layered products
  DIG 58  Processes of forming magnets
  DIG 59  Processes in which a partial cure is involved
  DIG 60  Processes of molding plastisols
  DIG 61  Processes of molding polyamide
  DIG 62  Processes of molding porous films
  DIG 63  Processes of molding porous blocks
  DIG 64  Processes of using preforms in molding
  DIG 65  Processes of preheating prior to molding
  DIG 66  Processes of reshaping and reforming
  DIG 67  Forming ring-like structure
  DIG 68  Roll
  DIG 69  Processes of using scrap in molding
  DIG 70  Processes for forming screens or perforating articles
  DIG 71  Processes of shaping by shrinking
  DIG 72  Processes of molding by spraying
  DIG 73  Processes of stretching
  DIG 74  Processes of repairing tires
  DIG 75  Processes of uniting two or more fibers
  DIG 76  Processes of uniting two or more parts
  DIG 77  Processes of molding urethanes
  DIG 78  Processes of molding using vacuum
  DIG 79  Processes of molding articles of vinylidene chloride
  DIG 80  Processes of waterproofing
  DIG 81  Plastic net
  DIG 82  Embossing by foaming
  DIG 83  Injection molding of polyolefin-type foam
  DIG 84  Conversion of foamed resinous buns into foamed billets
           having geometrical cross-sections