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: 148
 Class Title: METAL TREATMENT

Subclass  Subclass
Number    Title

  95      PROCESS OF MODIFYING OR MAINTAINING INTERNAL PHYSICAL STRUCTURE
           (I.E., MICROSTRUCTURE) OR CHEMICAL PROPERTIES OF METAL, PROCESS
           OF REACTIVE COATING OF METAL AND PROCESS OF CHEMICAL-HEAT
           REMOVING (E.G., FLAME-CUTTING, ETC.) OR BURNING OF METAL
  96      .Superconductive metal or alloy (i.e., superconductive Tc at or
            below 30'K)
  97      ..Particle (e.g., ion, neutron, etc.) bombardment or
             electromagnetic wave energy (e.g., laser, etc.)
  98      ..Producing or treating an A3B (e.g., Nb3Sn, V3Ga, Nb3Al, etc.)
             superconducting alloy
  99      .Treating in extraterrestrial environment (e.g., space, moon,
            etc.) or zero gravity environment
  100     .Magnetic materials
  101     ..Permanent magnet
  102     ...Age hardening
  103     ...Treatment in a magnetic field
  104     ..Dust cores
  105     ..Particulate material
  108     ..Treatment in a magnetic field
  110     ..Silicon steel
  111     ...Working
  112     ...Heat treatment
  113     ....With special compositions
  120     ..Working
  121     ..Heat treatment
  122     ...With special compositions
  194     .Chemical-heat removing (e.g., flame-cutting, etc.) or burning
            of metal
  195     ..Control responsive to sensed condition of workpiece
  196     ..Program or pattern control
  197     ..Utilizing fluid contact other than flame
  198     ..With solid additive
  199     ...Metal powder
  200     ..Of edge or corner (e.g., deburring, etc.)
  201     ..Cylindrical workpiece
  202     ..Scarfing (e.g., desurfacing, planing, gouging, etc.)
  203     ...Simultaneous removing or burning of multiple sides of
              workpiece
  204     ..Flame piercing
  205     ..Plural nozzles or plural work-contacting jets
  206     .Carburizing or nitriding using externally supplied carbon or
            nitrogen source
  207     ..Carburizing or nitriding uniformly throughout the entire mass
             (i.e., internal carburizing)
  208     ..With decarburizing or denitriding
  209     ..Utilizing particulate fluid bed
  210     ..Of selected surface area (e.g., zone, top only, etc.)
  211     ...With working, machining, or cutting
  212     ...Nitriding
  213     ...Utilizing attached protective shield, mask or coating
  214     ....With noncarburizing or non-nitriding coating
  215     ..Measuring, sensing, or testingg
  216     ...Of gas composition (e.g., carbon content, etc.)
  217     ..With noncarburizing or non-nitriding reactive coating (e.g.,
             oxidizing, siliconizing, boronizing, etc.)
  218     ..Combined carburizing and nitriding (e.g., carbonitriding,
             nitrocarburizing, etc.)
  219     ...With working, machining, cutting, or post-carburizing and
              post-nitriding heating or quenching
  220     ..With producing or treating of workpiece having plural
             noncarburized or non-nitrided layers or mechanically engaged
             article or stock
  221     ..With casting or solidifying from melt
  222     ..Utilizing ionized gas (e.g., plasma, etc.) or electron arc or
             beam
  223     ..Including use of vacuum
  224     ..Utilizing wave energy (e.g., laser, etc.) or electric heating
             with work as conductor
  225     ..Iron(Fe) or iron base alloy
  226     ...With working, machining, or cutting
  227     ...Utilizing fused agent or media
  228     ....Nitriding
  229     ....With post-carburizing quenching
  230     ...Nitriding
  231     ....Utilizing nitrogen containing agent other than ammonia or
               elemental nitrogen
  232     ....With post-nitriding heat or quenching
  233     ...With post-carburizing heating or quenching
  234     ...Utilizing agent containing cyano (CN) radical or halogen (X)
              radical or metal carbonate
  235     ...Utilizing hydrocarbon, oil or oxygenated hydrocarbon (e.g.,
              alcohol, furan, carbohydrate, etc.)
  236     ...Utilizing solid carbonaceous material containing free carbon,
              coal, peat, or coke
  237     ..Refractory metal (i.e., Ti, V, Cr, Zr, Nb, Mo, Hf, Ta, W) or
             refractory base alloy
  238     ..Nitriding
  239     .With ion implantation
  240     .Processes of coating utilizing a reactive composition which
            reacts with metal substrate or composition therefore
  241     ..Testing or electrical or wave energy utilized
  242     ..Molten bath or molten surface utilized during reaction
  243     ..Liquid reactive coating composition utilized
  244     ...Dye or organic pigment containing
  245     ...Electrically insulating coating formed which is more than
              mere oxide formation
  246     ...Contains lubricant or oil or overcoat thereof
  247     ...Contains an atom of hafnium, titanium or zirconium (excludes
              activating composition)
  248     ...Contains nonreactive organic liquid at ambient temperature
              (e.g., solvent, etc.)
  249     ....Nonreactive halogenated hydrocarbon
  250     ...Contains organic phosphorus or organic chromium compound
  251     ...Contains solid synthetic polymer
  252     ...Contains dicarboxylic acid or salt thereof which reacts with
              metal substrate
  253     ...Contains phosphorus
  254     ....Liquid composition applied prior to reaction of metal
               substrate with phosphorus (e.g., cleaning, activating,
               etc.))
  255     ....With additional coating composition containing an atom of
               chromium, phosphorus or sulfur
  256     ....Specified liquid or gaseous coating composition applied
               after reaction with phosphorus
  257     .....Specified coating composition contains organic material
  258     ....Contains an atom of chromium
  259     ....Contains organic additive other than for pH control
  260     .....Nitrogen-containing organic compound
  261     ....Contains an atom of arsenic, boron or metal atom other than
               alkali metal
  262     .....Contains an atom of iron or manganese or a group II metal
                atom (Be, Ca, Sr, Ba, Zn, Cd, Hg)
  263     ......Contains an atom of calcium
  264     ...Contains an atom of chromium
  265     ....Post chromium treatment with specified material (other than
               mere air drying)
  266     ....Contains an atom of sulfur, selenium or tellurium
  267     ....Contains trivalent chromium ion or reducing agent or an
               organic additive
  268     ....Contains an atom or boron, silicon or metal atom other than
               alkali metal
  269     ...Metal substrate contains elemental Ti, Zr, Hf, Cu, Ta, or Th
              or alloy thereof
  270     ...Contains an atom of sulfur, selenium or tellurium
  271     ....Contains organic sulfur compound
  272     ...Coating or treating a metal oxide with a specified
              composition
  273     ...Contains an atom of arsenic or metal atom other than alkali
              metal
  274     ...Contains organic material
  275     ...Metal substrate contains elemental aluminum or magnesium or
              alloy thereof
  276     ..Coating during or after metal oxide formation
  277     ..Metal oxide formed after applied coating
  278     ..Carbide formation, decarburization or carbonizing
  279     ..Contains an atom of boron or silicon that reacts with metal
             substrate
  280     ..Reactive material applied nonuniformly or reacted selectively
  281     ..Metal substrate contains elemental Ti, Zr, Nb, Ag, Ta, or W or
             alloy thereof
  282     ..Metal substrate contains elemental copper or alloy thereof
  283     ..Contains an atom of halogen, organic material or gaseous
             sulfur
  284     ..Coating composition applied forms oxide coating
  285     ...Oxide of aluminum, beryllium or magnesium formed
  286     ...Oxide of cobalt, chromium or nickel formed
  287     ...Oxide of iron formed
  500     .Utilizing disclosed mathematical formula or relationship
  501     ..Nonferrous metal, nonferrous based alloy or no-base alloy
  502     ...Aluminum(Al) or aluminum base alloy
  503     ..Utilizing therein symbol for temperature
  504     ...With working step
  505     ..Utilizing therein factors or percentages related to metal or
             metal alloy composition (i.e., including carbon content)
  506     ...With chromium(Cr) in the mathematical relationship
  507     ...With titanium(Ti) in the mathematical relationship
  508     .With measuring, testing, or sensing
  509     ..Magnetic or electrical propertyy
  510     ..Change in dimension (e.g., expansion, elongation, distortion,
             etc.)
  511     ..Temperature
  512     .Surface melting (e.g., melt alloying, etc.)
  513     .Treating loose metal powder, particle or flake
  514     .Treating consolidated metal powder, per se (i.e., no sintering
            or compacting step present)
  515     .With explosive or exothermic agent
  516     .Producing or treating layered, bonded, welded, or mechanically
            engaged article or stock as a final product
  517     ..Subambient temperature
  518     ..With electrocoating (e.g., electroplating, anodizing,
             sputtering, etc.)
  519     ..Pipe or tube
  520     ...With induction heating
  521     ...With metal fusion bonding
  522     ..With casting or solidifying from melt
  523     ...Of aluminum(Al) or aluminum alloy
  524     ..With metal fusion bonding step utilizing electron arc or beam
  525     ..Utilizing wave energy (e.g., laser, electromagnetic wave
             energy, etc.), plasma or electron arc or beam
  526     ..Electric heating with work as electrical conductor (e.g.,
             alternating current, induction, etc.)
  527     ..With metal next to or bonded to metal
  528     ...With brazing or soldering
  529     ...Iron(Fe) or iron base alloy present
  530     ....Next to nonferrous metal or nonferrous base alloy
  531     .....Aluminum(Al) or aluminum base alloy
  532     .....Copper(Cu) or copper base alloy
  533     .....Zinc(Zn), zinc base alloy or unspecified galvanizing
  534     ....With working
  535     ...Aluminum(Al) or aluminum base alloy present
  536     ...Copper(Cu) or copper base alloy
  537     ..With coating step
  538     .With casting or solidifying from melt
  539     ..Centrifugal casting
  540     ..Iron(Fe) or iron base alloy
  541     ...Continuous casting
  542     ...Containing at least nine percent chromium(Cr) (e.g.,
              stainless steel, etc.)
  543     ...Containing at least 1.5 percent carbon
  544     ....With working
  545     ....With tempering, ageing, solution treating (i.e., for
               hardening), precipitation hardening or strengthening, or
               quenching
  546     ...With working
  547     ....With tempering, ageing, solution treating (i.e., for
               hardening), precipitation hardening or strengthening, or
               quenching
  548     ...With tempering, ageing, solution treating (i.e., for
              hardening), precipitation hardening or strengthening, or
              quenching
  549     ..Aluminum(Al) or aluminum base alloy
  550     ...With extruding or drawing
  551     ...Continuous casting
  552     ...With working
  553     ..Copper(Cu) or copper base alloy
  554     ...With workingg
  555     ..Nickel(Ni) or nickel base alloy
  556     ...With working
  557     ..With working
  558     .With vibration (e.g., mechanical, sound, etc.)
  559     .Heating or cooling of solid metal
  560     ..Actinide or trans-actinide metal or alloy having greater than
             50 percent actinide or trans-actinide metals
  561     ..Passing through an amorphous state or treating or producing an
             amorphous metal or alloy
  562     ..Treating single crystal
  563     ..Mechanical memory (e.g., shape memory, heat-recoverable,
             etc.)
  564     ..Superplastic (e.g., dynamic recrystallization, etc.)
  565     ..Utilizing wave energy (e.g., laser, electromagnetic, etc.)
             plasma or electron arc or beam
  566     ..Electric heating with work as conductor (e.g., alternating
             current, induction, etc.)
  567     ...Induction
  568     ....Wire or filament
  569     ....Railway stock (e.g., rails, wheels, axles, etc.)
  570     ....Of hollow bodies (e.g., pipe, sphere, etc.)
  571     .....Inside only
  572     ....Rod, axle, shaft, or roller
  573     ....Gear, threaded article, drill or serrated work surface
               (e.g., saw blade, etc.)
  574     ....And cooling with fluid contact
  575     .....Iron(Fe) or iron base alloy
  576     ...Wire or filament
  577     ..Chilling to subambient temperature
  578     ...Iron(Fe) or iron base alloy
  579     ..Iron(Fe) or iron base alloy
  580     ...Spring or spring material
  581     ...Railway stock (e.g., rails, wheels, axles, etc.)
  582     ....Treating with specified agent (e.g., heat exchange agent,
               protective agent, decarburizing agent, denitriding agent,
               etc.) or vacuum
  583     ....Wheel
  584     ....With working
  585     ....With work handling
  586     ...Gear
  587     ...Threaded article (e.g., screws, drill bits, etc.)
  588     ...Serrated work surface (e.g., saw blades, etc.)
  589     ...Ring
  590     ...Pipe or tube
  591     ....Treating with specified agent (e.g., heat exchange agent,
               protective agent, decarburizing agent, denitriding agent,
               etc.) or vacuum
  592     ....Nine percent or more chromium(Cr) (e.g., stainless steel,
               etc.)
  593     ....With working
  594     ....With work handling
  595     ...Wire, rod, or filament
  596     ....Treating with specified agent (e.g., heat exchange agent,
               protective agent, decarburizing agent, denitriding agent,
               etc.) or vacuum
  597     ....Nine percent or more chromium(Cr) (e.g., stainless steel,
               etc.)
  598     ....With workingg
  599     .....With working at or below 120'C or unspecified cold working
  600     ....With work handling
  601     ...With coiling or treating of coiled strip
  602     ....With working
  603     .....With working at or below 120'C or unspecified cold working
  604     ...Of stacked plural workpieces
  605     ...Nine percent or more chromium(Cr) (e.g., Stainless steel,
              etc.)
  606     ....Treating with specified agent (e.g., heat exchange agent,
               protective agent, decarburizing agent, denitriding agent,
               etc.) or vacuum
  607     ....Ageing, solution treating (i.e., for hardening),
               precipitation strengthening or precipitation hardening
  608     .....With working
  609     ....With working
  610     .....With working at or below 120'C or unspecified cold working
  611     ....Austenitic phase structure
  612     ...Starting material contains 1.7 percent or more carbon (e.g.,
              cast iron, etc.)
  613     ....Decarburizing
  614     ....Starting material is spherulitic (i.e., spheroidal) or
               vermicular (i.e., wormlike)
  615     ....Treating with specified agent (e.g., heat exchange agent,
               protective agent, decarburizing agent, denitriding agent,
               etc.) or vacuum
  616     ....Treating or producing white or malleable cast iron
  617     .....Producing malleable cast iron
  618     ......With spheroidal graphite production
  619     ...Containing 10 percent or more manganese(Mn) (e.g., Hadfield
              steel, etc.)
  620     ....With working
  621     ...Highly alloyed (i.e., greater than 10 percent alloying
              elements)
  622     ...Ageing, solution treating (i.e., for hardening),
              precipitation hardening or strengthening
  623     ....Overageing
  624     ....With working
  625     ...Treating with specified agent (e.g., heat exchange agent,
              protective agent, decarburizing agent, denitriding agent,
              etc.) or vacuum
  626     ....With preserving, recovering, separately treating or handling
               of the specified treating agent
  627     ....With localized or zone heating or cooling
  628     ....Using vacuum
  629     ....Decarburizing or denitriding
  630     ....Utilizing particulate fluid bed
  631     ....Fused treating agent
  632     .....With working
  633     ....Gaseous agent
  634     .....Hydrogen
  635     .....With working
  636     ....Liquid agent
  637     .....And cooling or quenching
  638     ......Treating composition contains water
  639     ...Localized or zone heating or cooling
  640     ....Utilizing protective or insulating shielding from heat
  641     ....Simultaneous heating and cooling treatment
  642     ....Heating with flame treatmentt
  643     ....With working
  644     ....Cooling
  645     ...With flattening, straightening, or tensioning by external
              force
  646     ...With restraining of metal from expanding or contracting
              during heating or cooling
  647     ....Die quenching
  648     ...With working
  649     ....Forging
  650     ....With working at or below 120'C or unspecified cold working
  651     .....Heating step follows cold working
  652     ......Separate cooling step follows cold working step
  653     ....With additional nonworking heating step
  654     ....Including cooling (e.g., quenching, etc.)
  655     ...With separate handling or treating of air, water, or
              unspecified fluid treating media
  656     ...Work handling
  657     ....Continuous strip or sheet
  658     ....During cooling step
  659     ...Including spheroidizing
  660     ...Including cooling (e.g., quenching, etc.)
  661     ....Strip, sheet, or plate
  662     ....Heating step follows cooling
  663     .....Tempering
  664     ....Multiple cooling steps
  665     ..Beryllium(Be) or beryllium base alloy
  666     ..Magnesium(Mg) or magnesium base alloy
  667     ...With working
  668     ..Refractory metal (i.e., titanium(Ti), zirconium(Zr),
             hafnium(Hf), vanadium(V), niobium(Nb), columbium(Cb),
             tantalum(Ta), chromium(Cr), molybdenum(Mo), tungsten(W)), or
             alloy base thereof
  669     ...Titanium(Ti) or titanium base alloy
  670     ....With working
  671     .....With ageing, solution treating (i.e., for hardening),
                precipitation hardening or strengthening
  672     ...Zirconium(Zr) or zirconium base alloy
  673     ...Tungsten(W) or tungsten base alloy
  674     ..Cobalt(Co) or cobalt base alloy
  675     ..Nickel(Ni) or nickel base alloy
  676     ...With working
  677     ....With ageing, solution treating, (i.e., for hardening),
               precipitation hardening or strengthening
  678     ..Noble metals (i.e., silver(Ag), gold(Au), osmium(Os),
             iridium(Ir), platinum(Pt), ruthenium(Ru), rhodium(Rh),
             palladium(Pd)) or alloy base thereof
  679     ..Copper(Cu) or copper base alloy
  680     ...With working above 400'C or nonspecified hot working
  681     ....Multiple working steps
  682     .....With ageing, solution treating (i.e., for hardening),
                precipitation hardening or strengthening
  683     ....With ageing, solution treating (i.e., for hardening),
               precipitation hardening or strengthening
  684     ...With working
  685     ....With ageing, solution treating (i.e., for hardening),
               precipitation hardening or strengthening
  686     ...With ageing, solution treating (i.e., for hardening),
              precipitation hardening or strengtheningg
  687     ...Treating with specified agent (e.g., heat exchange agent,
              protective agent, decarburizing agent or denitriding agent,
              etc.) or vacuum
  688     ..Aluminum(Al) or aluminum base alloy
  689     ...With extruding or drawing
  690     ....And ageing, solution treating (i.e., for hardening),
               precipitation hardening or strengthening
  691     ...With working above 400'C or nonspecified hot working
  692     ....Multiple working steps
  693     .....With ageing, solution treating (i.e., for hardening),
                precipitation hardening or strengthening
  694     ....With ageing, solution treating (i.e., for hardening),
               precipitation hardening or strengthening
  695     ...With working
  696     ....Multiple working steps
  697     .....With ageing, solution treating (i.e., for hardening),
                precipitation hardening or strengthening
  698     ...With ageing, solution treating (i.e., for hardening),
              precipitation hardening or strengthening
  699     ....Copper(Cu) containing
  700     .....Magnesium(Mg) containing
  701     ......Zinc(Zn) containing
  702     ....Magnesium(Mg) containing
  703     ...Treating with specified agent (e.g., heat exchange agent,
              protective agent, decarburizing agent, denitriding agent,
              etc.) or vacuum
  704     ....In fused state
  705     ..Zinc(Zn) or zinc base alloy
  706     ..Lead(Pb) or lead base alloy
  707     ..Over 50 percent metal, but no base
  708     ..Treating with specified agent (e.g., heat exchange agent,
             protective agent, decarburizing agent, denitriding agent,
             etc.) or vacuum
  709     ...With preserving, recovering or separately handling or
              treating of the agent
  710     ...Utilizing particulate form in fluid bed
  711     ...In fused state
  712     ...In gaseous state
  713     ...In liquid state
  714     ..Localized or zone heating or cooling treatment
  22      COMPOSITIONS
  23      .Fluxing
  24      ..Metallic
  25      ..Oleaginous
  26      ..Inorganic
  27      .Heat treating
  28      ..Liquid
  29      ...Oleaginous
  30      ..Carbonaceous
  33      BARRIER LAYER STOCK MATERIAL, P-N TYPE
  33.1    .With contiguous layer doped to degeneracy
  33.2    .With recess, void, dislocation, grain boundaries or
            channel openings
  33.3    .With non-semiconductive coating thereon
  33.4    .With contiguous layers of different semiconductive
            material
  33.5    .Having at least three contiguous layers of semiconductive
            materiall
  33.6    ..Including an alloy layer having named impurities
  400     STOCK
  401     .Radioactive
  300     .Magnetic
  301     ..Rare earth and transition metal containing
  302     ...Boron containing
  303     ...Copper containing
  304     ..Amorphous
  305     ...With inclusion
  306     ..Iron base (i.e., ferrous)
  307     ...Silicon containing
  308     ....Specific crystallographic orientation
  309     ....Containing over 1 percent aluminium
  310     ...Nickel containing
  311     ...Cobalt containing
  312     ..Nickel base
  313     ..Cobalt base
  314     ..Manganese base
  315     ..No single metal over 50 percent
  316     .Carburized or nitrided
  317     ..Nitrided
  318     ...Ferrous (i.e., iron base)
  319     ..Ferrous (i.e., iron base)
  402     .Mechanical memory
  403     .Amorphous, i.e., glassy
  404     .Directionally solidified
  320     .Ferrous (i.e., iron base)
  321     ..1.7 percent or more carbon containing (e.g., cast iron)
  322     ...Malleabilized
  323     ...Chill cast
  324     ...Six percent or more group IV, V or VI transition metal
              containing
  325     ..Nine percent or more chromium containing
  326     ...Age or precipitation hardened or strengthened
  327     ...Eight percent or more total content of nickel and/or
              manganese containing
  328     ..Age or precipitation hardened or strengthed
  329     ..Eight percent or more manganese containing
  330     ..Beryllium or boron containing
  331     ..Rare earth meal containing
  332     ..Copper containing
  333     ..Chromium containing, but less than 9 percent
  334     ...Molybdenum containing
  335     ....Nickel containing
  336     ..Nickel containing
  337     ..Three percent or more manganese containing or containing other
             transition metal in any amount
  405     .Age or precipitation hardened or strengthened
  406     ..Magnesium base
  407     ..Refractory metal base
  408     ..Cobalt base
  409     ..Nickel base
  410     ...Chromium containing
  411     ..Copper base
  412     ...Tin containing
  413     ...Zinc containing
  414     ...Nickel containing
  415     ..Aluminum basee
  416     ...Copper containing
  417     ....Magnesium containing
  418     .....Vanadium, niobium or tantalum containing
  419     ..Containing over 50 percent metal, but no base metal
  420     .Magnesium base
  421     .Titanium, zirconium, or hafnium base
  422     .Vanadium, niobum, or tantalum base
  423     .Chromium, molybdenum, or tungsten base
  424     .Manganese base
  425     .Cobalt base
  426     .Nickel base
  427     ..Chromium containing
  428     ...Aluminum containing
  429     ..Aluminum containing
  430     .Noble metal base
  431     ..Silver base containing in situ formed oxides
  432     .Copper base
  433     ..Tin containing
  434     ..Zinc containing
  435     ..Nickel containing
  436     ..Aluminum containing
  437     .Aluminum base
  438     ..Copper containing
  439     ...Magnesium containing
  440     ..Magnesium containing
  441     .Zinc base
  442     .Containing over 50 per cent metal, but no base metal
  *       ******************************
  *       CROSS-REFERENCE ART COLLECTIONS PERTAINING TO SUBCLASSES 400+
           STOCK
  *       ******************************
  900     ION IMPLANTED
  901     SURFACE DEPLETED IN AN ALLOY COMPONENT (E.G., DECARBURIZED)
  902     HAVING PORTIONS OF DIFFERING METALLURGICAL PROPERTIES OR
           CHARACTERISTICS
  903     .Directly treated with high energy electromagnetic waves or
            particles (e.g., laser, electron beam)
  904     .Crankshaft
  905     .Cutting tool
  906     .Roller bearing element
  907     .Threaded or headed fastener
  908     .Spring
  909     .Tube
  910     .In pattern discontinuous in two dimensions (e.g., checkerboard
            pattern)
  *       *****************************
  *       DIGESTS
  *       *****************************
  DIG 1   AMORPHOUS SEMICONDUCTOR
  DIG 2   AMPHOTERIC DOPING
  DIG 3   ANNEAL
  DIG 4   ANNEALING, INCOHERENT LIGHT
  DIG 5   ANTIMONIDES OF GALLIUM OR INDIUM
  DIG 6   APPARATUS
  DIG 7   AUTODOPING
  DIG 8   BI-LEVEL FABRICATION
  DIG 9   BI-MOS
  DIG 10  BIPOLAR TRANSISTORS-ION IMPLANTATIONN
  DIG 11  BIPOLAR TRANSISTORS
  DIG 12  BONDING E.G., ELECTROSTATIC FOR STRAIN GAUGES
  DIG 13  BREAKDOWN VOLTAGE
  DIG 14  CAPACITOR
  DIG 15  CAPPING LAYER
  DIG 16  CATALYST
  DIG 17  CLEAN SURFACES
  DIG 18  COMPENSATION DOPING
  DIG 19  CONTACTS OF SILICIDES
  DIG 20  CONTACTS, SPECIAL
  DIG 21  CONTINUOUS PROCESS
  DIG 22  CONTROLLED ATMOSPHERE
  DIG 23  DEEP LEVEL DOPANTS
  DIG 24  DEFECT CONTROL-GETTERING AND ANNEALING
  DIG 25  DEPOSITION MULTI-STEP
  DIG 26  DEPOSITION THRU HOLE IN MASK
  DIG 27  DICHLOROSILANE
  DIG 28  DICING
  DIG 29  DIFFERENTIAL CRYSTAL GROWTH RATES
  DIG 30  DIFFUSION
  DIG 31  DIFFUSION AT AN EDGE
  DIG 32  DIFFUSION LENGTH
  DIG 33  DIFFUSION OF ALUMINUM
  DIG 34  DIFFUSION OF BORON OR SILICON
  DIG 35  DIFFUSION THRU A LAYER
  DIG 36  DIFFUSION, NONSELECTIVE
  DIG 37  DIFFUSION-DEPOSITION
  DIG 38  DIFFUSIONS-STAGED
  DIG 39  DISPLACE P-N JUNCTION
  DIG 40  DOPANTS, SPECIAL
  DIG 41  DOPING CONTROL IN CRYSTAL GROWTH
  DIG 42  DOPING, GRADED, FOR TAPERED ETCHING
  DIG 43  DUAL DIELECTRIC
  DIG 44  EDGE DIFFUSION UNDER MASK
  DIG 45  ELECTRIC FIELD
  DIG 46  ELECTRON BEAM TREATMENT OF DEVICES
  DIG 47  EMITTER DIP
  DIG 48  ENERGY BEAM ASSISTED EPI GROWTH
  DIG 49  EQUIVALENCE AND OPTIONS
  DIG 50  ETCH AND REFILL
  DIG 51  ETCHING
  DIG 52  FACE TO FACE DEPOSITION
  DIG 53  FIELD EFFECT TRANSISTORS FETS
  DIG 54  FLAT SHEETS-SUBSTRATES
  DIG 55  FUSE
  DIG 56  GALLIUM ARSENIDE
  DIG 57  GAS FLOW CONTROL
  DIG 58  GE GERMANIUM
  DIG 59  GERMANIUM ON SILICON OR GE-SI ON III-V
  DIG 60  GETTERING
  DIG 61  GETTERING-ARMORPHOUS LAYERS
  DIG 62  GOLD DIFFUSION
  DIG 63  GP II-IV-VI COMPOUNDS
  DIG 64  GP II-VI COMPOUNDS
  DIG 65  GP III-V (GENERIC) COMPOUNDS-PROCESSING
  DIG 66  GP III-V LIQUID PHASE EPITAXY
  DIG 67  GRADED ENERGY GAP
  DIG 68  GRAPHITE MASKINGG
  DIG 69  GREEN SHEETS
  DIG 70  GUARD RINGS AND CMOS
  DIG 71  HEATING, SELECTIVE
  DIG 72  HETEROJUNCTIONS
  DIG 73  HOLLOW BODY
  DIG 74  HORIZONTAL MELT SOLIDIFICATION
  DIG 75  IMIDE RESISTS
  DIG 76  IMPLANT
  DIG 77  IMPLANTATION OF SILICON ON SAPPHIRE
  DIG 78  IMPURITY REDISTRIBUTION BY OXIDATION
  DIG 79  INERT CARRIER GAS
  DIG 80  INFRA-RED
  DIG 81  INSULATORS
  DIG 82  ION IMPLANTATION FETS/COMS
  DIG 83  ION IMPLANTATION, GENERAL
  DIG 84  ION IMPLANTATION OF COMPOUND DEVICES
  DIG 85  ISOLATED-INTEGRATED
  DIG 86  ISOLATED ZONES
  DIG 87  I2L INTEGRATED INJECTION LOGIC
  DIG 88  J-FET (JUNCTION FIELD EFFECT TRANSISTOR)
  DIG 89  JOSEPHSON DEVICES
  DIG 90  LASER ANNEAL
  DIG 91  LASER BEAM PROCESSING OF FETS
  DIG 92  LASER BEAM PROCESSING-DIODES OR TRANSISTOR
  DIG 93  LASER BEAM TREATMENT IN GENERAL
  DIG 94  LASER BEAM TREATMENT OF COMPOUND DEVICES
  DIG 95  LASER DEVICES
  DIG 96  LATERAL TRANSISTOR
  DIG 97  LATTICE STRAIN AND DEFECTS
  DIG 98  LAYER CONVERSION
  DIG 99  LED, MULTICOLOR
  DIG 100 LIFT-OFF MASKING
  DIG 101 LIQUID PHASE EPITAXY LPE
  DIG 102 MASK ALIGNMENT
  DIG 103 MASK, DUAL FUNCTION E.G., DIFFUSION AND OXIDATION
  DIG 104 MASK, MOVABLE
  DIG 105 MASKS, METAL
  DIG 106 MASKS, SPECIAL
  DIG 107 MELT
  DIG 108 MELT BACK
  DIG 109 MEMORY DEVICES
  DIG 110 METAL-ORGANIC CVD (RUEHRWEIN TYPE)
  DIG 111 NARROW MASKING
  DIG 112 NITRIDATION, DIRECT, OF SILICON
  DIG 113 NITRIDES OF BORON OR ALUMINUM OR GALLIUM
  DIG 114 NITRIDES OF SILICON
  DIG 115 ORIENTATION
  DIG 116 OXIDATION, DIFFERENTIAL
  DIG 117 OXIDATION, SELECTIVE
  DIG 118 OXIDE FILMS
  DIG 119 PHOSPHIDES OF GALLIUM OR INDIUM
  DIG 120 PHOTOCATHODES-CS COATED AND SOLAR CELL
  DIG 121 PLASTIC TEMPERATURE
  DIG 122 POLYCRYSTALLINE
  DIG 123 POLYCRYSTALLINE DIFFUSE ANNEAL
  DIG 124 POLYCRYSTALLINE EMITTER
  DIG 125 POLYCRYSTALLINE PASSIVATION
  DIG 126 POWER FETSS
  DIG 127 PROCESS INDUCED DEFECTS
  DIG 128 PROTON BOMBARDMENT OF SILICON
  DIG 129 PULSE DOPING
  DIG 130 PURIFICATION
  DIG 131 REACTIVE ION ETCHING RIE
  DIG 132 RECOIL IMPLANTATION
  DIG 133 REFLOW OXIDES AND GLASSES
  DIG 134 REMELT
  DIG 135 REMOVAL OF SUBSTRATE
  DIG 136 RESISTORS
  DIG 137 RESISTS
  DIG 138 ROUGHENED SURFACE
  DIG 139 SCHOTTKY BARRIER
  DIG 140 SCHOTTKY BARRIER CONTACTS
  DIG 141 SELF-ALIGNMENT COAT GATE
  DIG 142 SEMICONDUCTOR-METAL-SEMICONDUCTOR
  DIG 143 SHADOW MASKING
  DIG 144 SHALLOW DIFFUSION
  DIG 145 SHAPED JUNCTIONS
  DIG 146 SHEET RESISTANCE (DOPANT PARAMETERS)
  DIG 147 SILICIDES
  DIG 148 SILICON CARBIDE
  DIG 149 SILICON ON III-V
  DIG 150 SILICON ON SAPPHIRE SOS
  DIG 151 SIMULTANEOUS DIFFUSION
  DIG 152 SINGLE CRYSTAL ON AMORPHOUS SUBSTRATE
  DIG 153 SOLAR CELLS-IMPLANTATIONS-LASER BEAM
  DIG 154 SOLID PHASE EPITAXY
  DIG 155 SOLID SOLUBILITY
  DIG 156 SONOS
  DIG 157 SPECIAL DIFFUSION AND PROFILES
  DIG 158 SPUTTERING
  DIG 159 STRAIN GAUGES
  DIG 160 SUPERLATTICE
  DIG 161 TAPERED EDGES
  DIG 162 TESTING STEPS
  DIG 163 THICK-THIN OXIDES
  DIG 164 THREE DIMENSIONAL PROCESSING
  DIG 165 TRANSMUTATION DOPING
  DIG 166 TRAVELING SOLVENT METHOD
  DIG 167 TWO DIFFUSIONS IN ONE HOLE
  DIG 168 V-GROOVES
  DIG 169 VACUUM DEPOSITION (INCLUDES MOLECULAR BEAM EPITAXY
  DIG 170 VAPOR-LIQUID-SOLID
  DIG 171 VARISTOR
  DIG 172 VIDICONS
  DIG 173 WASHED EMITTER
  DIG 174 ZENER DIODES