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: 204
 Class Title: CHEMISTRY: ELECTRICAL AND WAVE ENERGY

Subclass  Subclass
Number    Title

  *       PROCESSES AND PRODUCTS
  1.11    .Electrolysis
  1.5     ..Actinide series element or compound
  59 R    ..Synthesis
  60      ...From fused bath
  61      ....Compound
  62      .....Organic
  63      .....Inorganic nitrogen containing
  64 R    ....Metals
  65      .....Beryllium
  66      .....Lead or zinc
  67      .....Aluminum
  68      .....Alkali-forming
  69      ......Alkaline earth metals
  70      .......Magnesium
  71      .....Alloys
  64 T    .....Titanium, zirconium, hafnium
         ...From aqueous bath
  72      ....Organic compounds
  73 R    .....Hydrogenation
  74      ......Of nitrogenous radicals
  75      ......Of carbonylic radicals
  76      .......Acyclic
  77      ........Production of alcohols
  73 A    ......Of nitrilo alkene/alkyne unsaturation
  78      .....Oxidation
  79      ......Of acyclic compounds
  80      .......Hydrocarbons
  81      .....Halogenation
         ....Inorganic compounds
  82      .....Per-compounds
  83      ......Peroxides
  84      .......Hydrogen peroxide
  85      ......Perborates
  86      .....Metallic salts
  87      ......Carbonates
  88      .......Of lead
  89      ......Chromium containing
  90      ......Phosphorus containing
  91      ......Nitrogen containing
  92      ......Sulfur containing
  93      .......Sulfates
  94      ......Halogen containing
  95      .......Oxyhalogen
  96      .....Metallic oxides and hydroxides
  97      ......Of chromium
  98      ......Of alkali-forming metals
  99      .......Mercury cathode
  100     ......Of alkaline earth metals
  101     .....Non-metallic compounds
  102     ......Ammonia and ammonium hydroxide
  103     ......Acid and acid anhydridess
  104     .......Sulfuric
  105 R   ....Metallic elements
  106     .....Copper
  107     ......Halogenating leach
  108     ......Sulfating leach
  109     .....Precious metals
  110     ......Cyaniding leach
  111     ......Halogenating leach
  112     .....Iron group metals (i.e., iron, nickel, cobalt)
  113     ......Halogenating leach
  114     .....Lead, zinc, cadmium
  115     ......Reduction at the cathode
  116     ......Alkali hydroxide leach
  117     ......Halogenating leach
  118     .......Zinc
  119     ......Sulfating leach
  120     .....Tin
  121     ......Alkali hydroxide leach
  122     ......Halogenating lach
  123     .....Alloys
  124     ......Of mercury
  125     .......With alkali-forming metal
  126     .......With precious metals
  127     ........Cyaniding leach
  105 M   .....Manganese
  128     ....Nonmetallic elements
  129     .....Hydrogen or oxygen
  59 F    ...Fluororganic compounds
  59 M    ...Metal
  59 AM   ....Alkali metal
  59 QM   ...Of organometallic compound
  59 L    ....Organolead compound
  129.1   ..Erosion of a workpiece for shape or surface change; e.g.,
             etching, polishing, etc.
  129.2   ...With measuring, testing or sensing
  129.25  ....To adjust voltage across or size of tool-workpiece gap
  129.3   ...Employing irradiation or workpiece of nonuniform
              internal electrical characteristics
  129.35  ...With preliminary cleaning or shaping of workpiece
  129.4   ...Employing internal battery action or simple alternating
              current
  129.43  ...Employing periodic current change
  129.46  ...Employing abrading or wiping; e.g., electrochemical
              grinding, etc.
  129.5   ...With defined electrode-workpiece gap or gap maintenance
  129.55  ...Sharpening, pointing or aperture making
  129.6   ...By local application of electrolyte; e.g., unsupported
              jet, surface tension, etc
  129.65  ...Of masked workpiece
  129.7   ...With vibration or defined electrolyte movement or
              pressure during erosion
  129.75  ...Electrolyte composition or with defined electrolyte
  129.8   ....Less than 50% water
  129.85  .....More than 20% organic material
  129.9   .....More than 20% chromium compound or phosphoric acid
  129.95  ....Containing organic or Cr or P or Cyan compound
  130     ..Material treatment
  131     ...Organic materialss
  132     ....Fibrous
  133     .....Bleaching
  134     .....Dyeing
  135     .....Hides or skins
  136     ....Hydrocarbon oils
  138     ....Sugar
  140     ...Metals and metallic alloys
  141.5   ....Removing foreign materials, e.g., cleaning, etc.
  144     .....By internal battery action
  144.5   .....With current change in workpiece or solid-workpiece
                moving contact
  145 R   .....Nonelemental material from ferrous metals
  145 F   ......Fused bath
  146     .....Entire identifiable elemental layer or portion; e.g.,
                stripping, etc.
  147     ....Object protection
  148     .....Internal battery action
  149     ...Water, sewage and other waste waters
  150     ....Internal battery action
  151     ....Diaphragm
  152     ....With filtering
  153     ...Alkali-forming metal hydroxides
  153.1   ..Analysis or testing
  153.11  ...For corrosion
  153.12  ...Involving enzyme or microorganism
  153.13  ...For halogen or halogen containing compound
  153.14  ...For nitrogen or nitrogen containing compound
  153.15  ...For alkali or alkaline earth metal or compound thereof
  153.16  ...For oxygen or oxygen containing compound (except water)
  153.17  ....Utilizing semipermeable membrane
  153.18  ....Utilizing solid electrolyte
  153.19  ...For sulfur or sulfur containing compound
  153.2   ...For organic compound
  153.21  ...For pH
  153.22  ...For water (e.g., moisture, etc.)
  153.23  ...Including titration
  155     .Electrical, or wave energy in magnetic field
  156     ..With discharge
  157.15  .Processes of treating materials by wave energy
  157.2   ..Isotope separation or enrichment
  157.21  ...Inorganic product produced
  157.22  ....Using laser
  157.3   ..Removing a component from normally gaseous mixture
  157.4   ..Process of preparing desired inorganic material
  157.41  ...Using laser
  157.42  ...Using sonic or ultrasonic energy
  157.43  ...Using microwave energy
  157.44  ...Using ionizing radiation
  157.45  ...Boron, phosphorous or silicon containing product
              produced
  157.46  ...Nitrogen containing product produced
  157.47  ...Carbon containing product produced
  157.48  ...Halogen containing product produced
  157.49  ...Sulfur containing product produced
  157.5   ...Oxygen containing product produced
  157.51  ....Metal oxide or hydrate thereof
  157.52  ...Hydrogen containing product produced
  157.6   ..Process or preparing desired organic product containingg
             at least one atom other than carbon and hydrogen
  157.61  ...Using laser
  157.62  ...Using sonic or ultrasonic energy
  157.63  ...Using ionizing radiation
  157.64  ....Nitrogen, sulfur, phosphorous or silicon containing
               product produced
  157.65  ....Carbocyclic ring containing product produced
  157.67  ...Vitamin product produced
  157.68  ...Carbohydrate or protein product produced
  157.69  ...Heterocyclic product produced
  157.7   ....Hetero sulfur containing
  157.71  ....Hetero nitrogen containing
  157.72  .....Hetero nitrogen ring contains at least two hetero
                atoms
  157.73  ...Phosphorous product produced
  157.74  ...Silicon product produced
  157.75  ...Heavy metal product produced
  157.76  ...Sulfur product produced
  157.77  ....Nitrogen containing
  157.78  ....Oxygen containing
  157.79  .....Halogen containing
  157.8   ....Halogen containing
  157.81  ...Nitrogen product produced
  157.82  ....Oxygen containing
  157.83  .....Nitroso or oxime containing
  157.84  ......Halogen containing
  157.85  ....Carbon triple bonded to nitrogen containing
  157.86  ....Halogen containing
  157.87  ...Carboxylic acid or derivative product produced
  157.88  ....Oxygen other than as part of a carboxylic acid or
               derivative moiety
  157.89  ....Atom other than carbon, hydrogen or oxygen
  157.9   ...Alcohol product produced
  157.91  ....Fused or bridged ring containing
  157.92  ...Ether product produced
  157.93  ...Aldehyde or ketone product produced
  157.94  ...Halogen product produced
  157.95  ....Carbon and halogen only in product
  157.96  .....Carbocyclic ring containing
  157.97  ......Aryl ring containing
  157.98  ....Unsaturated product
  157.99  .....Unsaturation in aryl ring
  158.1   ....Carbocyclic ring containing
  158.11  ....Two or more diverse halogen atoms containing
  158.12  ....Four or more carbon atoms containing
  158.14  ..At least one carbocyclic ring and only carbon and
             hydrogen atoms in product produced
  158.2   ..Processes of purifying materials
  158.21  ...Organic material purified
  *       ******************************
  *       *Note: See subclasses .......*
  *       *900-914 for art collections.*
  *       *pertaining to subclasses....*
  *       *157.15-158.21. .............*
  *       ******************************
  164     .Electrostatic field or electrical discharge
  165     ..Organic
  166     ...Vitaminss
  167     ...Fats, fatty oils, ester type waxes, or higher fatty acids
  168     ...Hydrocarbons
  169     ....Halogenated or oxidized
  170     ....Gaseous
  171     .....Acetylene
  172     ....Cracking hydrocarbon oils
  173     ..Carbon
  174     ..Sulfur-oxygen compounds
  175     ..Hydrogen peroxide
  176     ..Ozone
  177     ..Nitrogen compounds
  178     ...Arc or spark discharge
  179     ....Nitrogen oxides
  180.1   .Electrophoresis or electro-osmosis processes
  180.2   ..Coating or forming of object
  180.3   ...Rubber or vulcanizable natural gum used to coat or form
  180.4   ....Sheet, web, wire or filament of indeterminate length
               formed or coated
  180.5   ...Alternating current
  180.6   ...Radiation energy (e.g., curing, etc.)
  180.7   ...Interior of article
  180.8   ...Regeneration, or replenishment of coating bath (e.g.,
              ultrafiltration, ion exchange, measuring-adjustment, etc.)
  180.9   ...Forming of object
  181.1   ...Plural coating operations
  181.2   ....Anodized or aluminum oxide coating
  181.3   ....Phosphate conversion coating
  181.4   ...Bath having designated chemical composition (DCC)
  181.5   ....Resultant coating is solely inorganic
  181.6   ....Anodic processes only
  181.7   ....Cathodic processes only
  181.8   ..Separation or purification of hydrocarbon oil
  181.9   ...Aqueous system
  182.1   ..At least two different electrophoretic or electro-osmotic
             methods or a combination of electrophoretic and
             electro-osmotic methods used, together or sequentially (other
             than merely combination of anion selective and cation
             selective)
  182.2   ..Inorganic siliceous or calcareous material prepared,
             treated or separated (e.g., clay, earth, asbestos, glass,
             etc.)
  182.3   ..Barrier separation (e.g., membrane, filter paper, etc.)
  182.4   ...Ion selective (i.e., distinguishes between different
              charges)
  182.5   ....Sea water, brine or sodium chloride prepared, treated
               or used
  182.6   ....Polypeptide or amino acid prepared, separated or
               treated (e.g., protein, milk, whey, blood, etc.)
  182.7   ..Absorbent strip electrophoresis (e.g., cellulose acetate
             or paper strip electrophoresis, etc.)
  182.8   ..Gel electrophoresis
  182.9   ...Isoelectric focusing (pH variation)
  183.1   ..Dielectrophoresis (nonuniform electric field)
  183.2   ..Isoelectric focusing (pH variation)
  183.3   ..Isotachophoresis (Displacement electrophoresis) or
             measurement of ion or particle mobility
  186     .Electrical separation or purification of liquids
  188     ..Hydrocarbon oilss
  189     ...With addition of dielectric fluid
  190     ...With addition of water or other modifying agent
  191     ...Modified alternating current waves
  192.1   .Coating, forming or etching by sputtering
  192.11  ..Ion beam sputter deposition
  192.12  ..Glow discharge sputter deposition (e.g., cathode
             sputtering, etc.)
  192.13  ...Measuring or testing (e.g., of operating parameters,
              property of article, etc.)
  192.14  ...Coating inorganic material onto polymeric material
  192.15  ...Specified deposition material or use
  192.16  ....Wear or abrasion resistant
  192.17  ....Electrical contact material
  192.18  ....Piezoelectric
  192.2   ....Ferromagnetic
  192.21  ....Resistor
  192.22  ....Insulator or dielectric
  192.23  .....Silicon containing
  192.24  ....Superconductor
  192.25  ....Semiconductor
  192.26  ....Optical or photoactive
  192.27  .....Reflective
  192.28  .....Absorptive
  192.29  .....Transparent conductor
  192.3   ....With sputter etching
  192.32  ..Sputter etching
  192.33  ...Measuring or testing (e.g., of operating parameters, end
              point determination, etc.)
  192.34  ...Ion beam etching (e.g., ion milling, etc.)
  192.35  ...Etching specified material
  192.36  ....Organic
  192.37  ....Silicon containing
  192.38  .Vacuum arc discharge coating
  193     APPARATUS
  194     .Electrolytic
  400     ..Analysis and testing
  401     ...Fault testing of sensor or component
  402     ...Regeneration or activation
  403     ...Biological, e.g., microbe, enzyme, antigen, etc.
  404     ...Corrosion
  405     ...Titration
  406     ...With significant electrical circuitry or nominal computer
              device
  407     ...With significant display or analytical device
  408     ...With means for temperature or pressure compensation
  409     ...With means providing specified-flow condition or flow-path
  410     ....Solid electrolyte means
  411     ....Three or more electrodes
  412     ...Three or more electrodes
  413     ...Liquid electrode, e.g., Hg, Na, etc.
  414     ...Gel electrolyte
  415     ...Selectively permeable membrane
  416     ...Ion-sensitive electrode
  417     ....Liquid ion-exchanger
  418     ....Organic membrane
  419     ....Inorganic membrane
  420     .....Glass ion-selective membrane
  421     ...Solid electrolytee
  422     ....Liquid sample sensor
  423     .....With fugitive protective element
  424     ....Gas sample sensor
  425     .....With impressed current means
  426     .....Planar electrode surface
  427     .....With gas reference material
  428     ......With protective element
  429     .......Protective element is a layer
  430     ...Moisture absorbing electrolyte
  431     ...Gas sensing electrode
  432     ....With gas diffusion electrode
  433     ...Measuring carbon or pH
  434     ...Involving plating, coating or stripping
  435     ...Standard reference electrode
  196     ..Object protection
  197     ...Internal battery
         ..With movable electrode means
  198     ...Work conveyer
  199     ....Rotary
  200     .....With base treatment
  201     .....Loose article
  202     ....Endless
  203     .....With base treatment
  204     ......With current control
  205     .....With current control
  206     ...Continuous strip or filament electrode
  207     ....With base treatment
  208     .....Stripping
  209     .....Mechanical working
  210     .....Heat treatment means
  211     ....With current control
  212     ...Rotary
  213     ....Barrels and rotary receptacles
  214     .....Swinging or tilting receptacles
  215     ....With base treatment
  216     .....Stripping
  217     .....Mechanical working
  218     ....With current control
  219     ...Liquid electrode
  220     ....With electrode recirculation means
  221     ....With oscillator, reciprocator or agitator
  222     ...Electrode oscillator, reciprocator or agitator
  223     ....With current control
  224 R   ...Localized area applicators
  224 M   ....Electrochemical machining
  225     ...Electrode feeding or withdrawal means
  226     ....With base treatment
  227     ..Cells with base treatment means
  228     ..Cells with current control means
  229     ...With fluid pressure, flow or level intercontrol
  230     ....Gaseous fluid
  231     ...Auxiliary electrode
  232     ..Cells with electrolyte treatment means
  233     ...Leacher, dissolver or extractor
  234     ....Recirculation
  235     .....With filter
  236     .....With heater or cooler
  237     ...Recirculationn
  238     ....With filter
  239     ....With heater or cooler
  240     ...With filter
  241     ...With heater or cooler
  242     ..Cells
  243 R   ...Fused bath
  244     ....Plural cells
  245     ....With feeding and/or withdrawal means
  246     .....Gas feeding
  247     .....Gas withdrawal
  243 M   ....Bath current distribution, magnetic field control
  248     ...Internal battery
  249     ....Filter or loose electrode type
  250     ...Liquid electrode
  251     ....Diaphragm type
  252     ...Diaphragm type
  253     ....Plural cells
  254     .....Bipolar electrode
  255     ......With feeding and/or withdrawal means
  256     .......Gas
  257     .....With feeding and/or withdrawal means
  258     ......Gas
  259     ....Basket-type electrode
  260     ....Concentrically arranged electrodes
  261     ....With agitator
  262     ....With heater or cooler
  263     ....With feeding and/or withdrawal means
  264     .....And filter
  265     .....Gas feeding
  266     .....Gas withdrawal
  267     ...Plural cells
  268     ....Bipolar electrode
  269     ....With feeding and/or withdrawal means
  270     .....Gas
  271     ...Portable
  272     ...Concentrically arranged electrodes
  273     ...With agitator
  274     ...With heater or cooler
  275     ...With feeding and/or withdrawal means
  276     ....And filter
  277     ....Gas feeding
  278     ....Gas withdrawal
  279     ..Elements
  280     ...Electrodes
  281     ....Electroforming molds or strips plates
  282     ....With diaphragm
  283     .....Perforated or foraminous electrode
  284     ....Perforated or foraminous
  285     .....Work holder
  286     ....With electrode supporting means
  287     .....Work container
  288     .....Electrodes with lateral extensions
  289     ....With lateral extensions
  290 R   ....Laminated or coated
  290 F   .....Dielectric film-forming metal base, insoluble
                conductive coating
  291     ....Composition
  292     .....Metallicc
  293     ......Alloys
  294     .....Carbon containing
  295     ...Diaphragms
  296     ....Organic
  297 R   ...Electrode supports and work holders
  297 M   ....Workpiece held by magnetism or suction
  297 W   ....Workpiece rack
  298.01  .Coating, forming or etching by sputtering
  298.02  ..Coating
  298.03  ...Measuring, analyzing or testing
  298.04  ...Ion beam sputter deposition
  298.05  ...Ion plating
  298.06  ...Triode, tetrode, auxiliary electrode or biased
              workpiece
  298.07  ...Specified gas feed or withdrawal
  298.08  ...Specified power supply or matching network
  298.09  ...Specified cooling or heating
  298.11  ...Specified mask, shield or shutter
  298.12  ...Specified target particulars
  298.13  ....Target composition
  298.14  ...Specified anode particulars
  298.15  ...Specified work holder
  298.16  ...Magnetically enchanced
  298.17  ....Flux passes through target surface
  298.18  .....Focusing target (e.g., conical target, plural inclined
                targets, etc.)
  298.19  .....Planar magnetron
  298.2   ......Moving magnetic field or target
  298.21  .....Cylindrical or curved magnetron target
  298.22  ......Moving magnetic field or target
  298.23  ...Moving workpiece or target
  298.24  ....Indeterminate length moving workpiece
  298.25  ....Multi-chamber (e.g., including air lock, load/unload
               chamber, etc.)
  298.26  ....Plural diverse treatment stations, zones, or coating
               material source within single chamber
  298.27  ....Plural modes of movement (e.g., planetary, epicyclic,
               etc.)
  298.28  ....Rotational movement
  298.29  ....Oscillatory movement
  298.31  ..Etching
  298.32  ...Measuring, analyzing or testing
  298.33  ...Specified gas feed or withdrawal
  298.34  ...Auxiliary electrode, bias means or specified power
              supply
  298.35  ...Multi-chamber, load/unload means or moving workpiece
  298.36  ...Beam or directed flux etching (e.g., ion beam, etc.)
  298.37  ...Magnetically enhanced
  298.38  ...Microwave excitation
  298.39  ...Plural parallel plates (e.g., desmearing reactor, etc.)
  298.41  .Vacuum arc discharge coating
  299 R   .Electrophoretic or electro-osmotic
  300 R   ..With electrode moving means
  300 EC  ...Coating
  301     ..With diaphragm
  299 EC  ..Coating
  302     .Electrical separation or purification of liquids
  304     ..With electrode moving meanss
  305     ..With current control means
  306     ...With fluid pressure, flow or level intercontrol
  307     ..With agitator or vibrator
  308     ..With heating or cooling means
  *       ******************************
  *       CROSS-REFERENCE ART COLLECTIONS
  *       ******************************
  900     EFFECTING A CHANGE IN ISOMERIZATION BY WAVE ENERGY
  901     EFFECTING A COLOR CHANGE BY WAVE ENERGY
  902     PRODUCTION OF DESIRED COMPOUND BY WAVE ENERGY IN PRESENCE OF A
           CHEMICALLY DESIGNATED NONREACTANT CHEMICAL TREATING AGENT
           (EXCLUDING WATER, CHLOROFORM, CARBON TETRACHLORIDE, METHYLENE
           CHLORIDE OR BENZENE)
  903     .Inorganic chemical treating agent
  904     ..Metal treating agent
  905     ...Heavy metal agent
  907     .Silicon or boron treating agent
  908     .Phosphorus treating agent
  909     .Heavy metal treating agent
  910     .Sulfur treating agent
  911     .Nitrogen treating agent
  912     .Oxygen treating agent
  913     ..Peroxide agent
  914     .Only carbon, hydrogen or halogen atom in treating agent
  *       ******************************
  *       DIGESTS
  *       ******************************
  DIG 3   Auxiliary internally generated electrical energy
  DIG 4   Electrolysis cell combined with fuel cell
  DIG 5   Magnetic plus electrolytic
  DIG 6   Unusual non-204 uses of electrolysis
  DIG 7   Current distribution within the bath
  DIG 8   AC plus DC
  DIG 9   Wave forms
  DIG 12  Electrochemical machining
  DIG 13  Purification and treatment of electroplating baths and
           plating wastes