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: 252
 Class Title: COMPOSITIONS

Subclass  Subclass
Number    Title

  1       MISCELLANEOUS
  2       FIRE-EXTINGUISHING
  3       .Foam or gas phase containing
  4       .Gas generative, chemically
  5       ..Dry, combustion type
  6       ..Low temperature chemically interreactive
  6.5     ...Foam-stabilizant or colloid-stabilizant containing
  7       ..Carbonates or ammonium salts containing or pyrolytic
  8       .Volatile or gas charged liquids containing
  8.05    .Foam-stabilizant or colloid-stabilizant containing
  601     FIRE RETARDING
  602     .Having disparate function
  603     .For living matter
  604     .Material physically quantified
  605     .Containing gas
  606     .Intumescent
  607     .For wood or cellulosic material other than textile
  608     .For textile
  609     .For solid synthetic polymer and reactants thereof
  610     .Dispersion or colloidal system
  611     ..For dispersion or collodial system
  8.551   WELL TREATING
  8.552   .Well cleaning (including removal or prevention)
  8.553   .Acidizing or formation destroying by chemical reaction
  8.554   .Water flooding or treatment of the formation with
            surfactant
  8.555   .Anticorrosion
  8.57    LEATHER OR FUR TREATING
  8.6     TEXTILE TREATING
  8.7     .Organic sulphoxy compound containing
  8.75    ..Organic amine or amide containing
  8.8     .Organic amine or amide containing
  8.9     .Ether group containing
  9       LUBRICANTS OR SEPARATANTS FOR MOVING SOLID SURFACES AND
           MISCELLANEOUS MINERAL OIL COMPOSITIONS
  10      .Packages or heterogeneous arrangements
  11      .Lubricating and foreign functions
  12      .Rigid lubricants and bearings containing fluent lubricants
  12.2    ..Impregnated
  12.4    ..With fibrous components
  12.6    ...Organic fibrous components
  13      .With fibrous carriers
  14      ..Organic carrier components
  15      .Gas charged
  16      .Solid-phase non-soap-forming inorganic or non-low-fusing
            components
  17      ..Soaps, organic-acid salts or soap-forming components
             containing
  18      ...Inorganic compounds or elements containing (except water)
  19      ....Free solid-phase metal containing
  20      ....Carbon, silica, or silicates and solid S, Se, or Te
               containingg
  21      ....Carbon, silica, or silicates containing
  22      .....Graphite or carbon containing
  23      ......With other inorganic components (except water)
  24      ....Solid-phase S, Se, or Te containing
  25      ..Inorganic compounds or elements containing (except water)
  26      ...Free solid-phase metal containing
  27      ...Carbon, silica, or silicates and solids S, Se, or TC
              containing
  28      ...Carbon, silica, or silicates containing
  29      ....Graphite or carbon containing
  30      .....With other inorganic components (except water)
  31      ...Solid-phase S, Se, or Te containing
  32      .Soaps, or organic-acid salts containing
  32.5    ..Phosphorus-containing - organic-acid salts containing
  32.7 R  ...S, Se, or Te containing
  32.7 E  ....Phosphosulfurized alcohols, phenols, thio-alcohols and
               thiophenols
  32.7 HC ....Phosphosulfurized hydrocarbons
  33      ..Sulpho-organic-acid salts containing
  33.2    ...With salts or other organic acids
  33.3    ....With rubber, solid terpenes or derivatives or other
               non-hydrocarbons
  33.4    ...With rubber, solid terpenes or derivatives or other
              non-hydrocarbons
  33.6    ..Salts of organic-acids of other than C, H, and O
             containing
  34      ..Ammonia or nitrogen-base organic-acid salts containing
  34.7    ...With rubber, solid terpenes or derivatives or other
              non-hydrocarbons
  35      ..Aluminum or heavy-metal organic-acid salts containing
  36      ...With alkaline-earth or alkali-metal organic-acid salts
  37      ...With rubber, solid terpenes or derivatives or other
              non-hydrocarbons
  37.2    ....Inorganic components, rubber or compounds of other than
               C, H, and O
  37.5    ....Aromatic- or carbocyclic-acid salts containing
  37.7    ...Aromatic- or carbocyclic-acid salts containing
  38      ..Alkaline-earth or alkali-metal organic-acid salts containing
  39      ...Alkaline-earth metal organic-acid salts containing
  40      ....With alkali-metal organic-acid salts
  40.5    ....With rubber, solid terpenes or derivatives or other
               non-hydrocarbons
  40.7    .....Inorganic components, rubber, or compounds of other
                than C, H, and O
  41      ...Alkali-metal organic-acid salts containing
  42      ....With rubber, solid terpenes or derivatives or other
               non-hydrocarbons
  42.1    .....Inorganic components, rubber or compounds of other
                than C, H, and O
  42.4    ..With rubber, solid terpenes or derivatives or other
             non-hydrocarbons
  42.7    .Metal or base, linked by O, S, Se, or Te to carbon of
            organic radical compounds containing
  43      .Rubber, solid terpenes or derivatives containing
  45      .S, Se, or Te, organic compounds or solutions containing
  46.3    ..Inorganic components or elements (except S) or compounds
             of other than C, H, O, S, N, and halogen containing
  46.4    ...Metals or matal compounds containingg
  46.6    ...Phosphorus or phosphorus compounds containing
  46.7    ....Se, Te, N, Halogen or other than C, H, O, S, and P
               containing
  47      ..Nitrogen compounds containing
  47.5    ...Oxygen, halogen or other than C, H, S, and N compounds
              containing
  48.2    ..Oxygen compounds containing
  48.4    ...Halogen or other than C, H, S, and O compounds
              containing
  48.6    ...Carboxyl compounds containing
  48.8    ..Halogen compounds containing
  49      .Aqueous or inorganic components
  49.3    ..Aqueous
  49.5    ...Emulsions or colloid dispersions containing
  49.6    .Compounds of other than C, H, O, N, and halogen
            containing
  49.7    ..Metal containing
  49.8    ..Phosphorus containing
  49.9    ...Nitrogen, halogen or other than C, H, O, and P
              containing
  50      .Nitrogen containing
  51      ..Oxygen halogen or other than C, H, and N containing
  51.5 R  ...Oxygen containing
  51.5 A  ....Amine-carboxylic acid or anhydride reaction products or
               mixtures
  52 R    .Oxygen containing
  54      ..Halogen or other than C, H, and O containing
  54.6    ...Carboxyl containing
  55      ..Artificially oxidized hydrocarbons containing
  56 R    ..Carboxylic acids or esters containing
  57      ...Carbocyclic or non-aliphatic compounds containing
  56 S    ..."Synthetic" ester is lube base or is present in
              substantial amounts
  56 D    ...Maleic, succinic or fumaric acids, anhydrides or their
              esters
  52 A    ..Polyoxyalkylene compounds
  58      .Halogen containing
  60      PHYSICAL SEPARATION AGENTS
  61      .Froth-flotation or differential adherence
  62      HEAT OR SOUND INSULATING
  62.2    ELECTROLYTES FOR ELECTRICAL DEVICES (E.G., RECTIFIER,
           CONDENSER)
  62.3 R  BARRIER LAYER DEVICE COMPOSITIONS
  62.3 T  .Thermoelectric
  62.3 Q  .Organic
  62.3 E  .Free element containing
  62.3 S  ..Selenium or tellurium
  62.3 GA .Group III element containing binary compound, e.g., Ga,
            As
  62.3 ZB .Groups II and V elements containing binary compound, e.g.,
            zinc, bismuth
  62.3 ZT .Groups II and VI elements containing binary compound,
            e.g., Zn, Te
  62.3 V  .Group VI element-containing
  62.3 BT ..Containing Group IV element and oxygen, e.g., barium,
             titanium III oxide
  62.3 C  .Binary alloy or carbide, e.g., Al, In, LiC
  62.51   MAGNETICC
  62.52   .Flaw detection or magnetic clutch
  62.53   .With wax, bitumen, resin or gum
  62.54   ..Synthetic resin
  62.55   .Free metal or alloy containing
  62.56   .Iron-oxygen compound containing
  62.57   ..With scandium, yttrium, gallium, rare earth or actinide
  62.58   ..With boron, aluminum, thallium or indium
  62.59   ..With titanium, zirconium, silicon, hafnium, germanium or
             tin
  62.6    ..With Group I metal
  62.61   ...Lithium
  62.62   ..With Group II metal or lead
  62.63   ...Calcium, barium, strontium or lead
  62.64   ...Magnesium
  62.9    PIEZOELECTRIC
  567     DEFINED LIQUID DIELECTRIC DISPERSED IN DEFINED WEB OR SHEET
  570     FLUENT DIELECTRIC
  571     .Gaseous or gas-containing
  572     .Metal- or insoluble component-containing
  573     .Si-containing
  574     .B-, P-, S-, Se-, or Te-containing
  575     .N-containing
  576     ..O in N compound
  577     ...Nitro or nitroso compound
  578     .O-containing
  579     ..Carboxylic acid ester
  580     ..Halogen-containing
  581     .Halogenated polycyclic compound-containing
  67      VAPORIZATION, OR EXPANSION, REFRIGERATION OR HEAT OR ENERGY
           EXCHANGE
  68      .With lubricants, or warning, stabilizing or anti-corrosion
            agents or persistent gases
  69      .With low-volatile solvent or absorbent
  70      FROST-PREVENTING, ICE-THAWING, THERMOSTATIC, THERMOPHORIC, OR
           CRYOGENIC
  71      HEAT-EXCHANGE, LOW-FREEZING OR POUR POINT, OR HIGH BOILING
           COMPOSITIONS
  72      .With leak-stopping agents
  73      .Organic components
  74      ..Metal compounds or inorganic components (except water)
  75      ...Organic compounds of nonmetals other than C, H, and O
  76      ...Carboxylic organic compounds containing
  77      ..Organic compounds of nonmetals other than C, H, and O
  78.1    ...Organic compounds of nonmetals other than C, H, O and N
  78.3    ....Organic Si containing compounds
  78.5    ....Organic P containing compounds
  79      ..Carboxylic organic compounds containing
  79.1    ETCHING OR BRIGHTENING COMPOSITIONS
  79.2    .Inorganic acid containing
  79.3    ..Fluorine compound containing
  79.4    ..With organic material
  79.5    .Alkali metal hydroxide containing
  80      DESCALING AGENT CONTAINING
  81      .Deoxidant or free-metal containing
  82      .Plant or organic material containing
  83      ..Tannin, bark, or bark extract containing
  84      ...With inorganic compound or element (except water)
  85      ....Inorganic matter other than alkali-metal hydroxides andd
               carbonates and water
  86      ..With inorganic compound or element (except water)
  87      ...Inorganic matter other than alkali-metal hydroxides and
              carbonates and water
  88      SWEEPING OR DUST OR PARTICLE ADHERENT
  89.1    DETERGENTS (FOR USE ON SOLID MATERIALS)
  90      .Packages or heterogeneous arrangements
  91      ..Impregnated or coated with detergents
  92      ..Separate soap containing and non-soap zones
  93      ...Wrapped or encased soaps
  94      .With chemical bleachant, oxidant, or reductant
  95      ..Oxidant containing
  96      ...Soap (water-soluble fatty acid or rosin) containing
  97      ....Water-soluble inorganic B, Si, or P compound containing
  98      ....Ammonia, amine, or nitrogen base compound containing (except
               proteins)
  99      ...Water-soluble inorganic B, Si or P compound containing
  100     ...Acidic
  101     ....Nitric acid or aqua regia containing
  102     ...Ammonia, amine, or nitrogen base compound containing (except
              proteins)
  103     ...Alkaline
  104     ...Solvent (physical or chemical) containing
  105     ..Reductant containing
  106     .Antiseptic, insecticide, or biocide containing
  107     ..Soap (water soluble fatty acid or rosin) containing
  108     .Soap (water-soluble fatty acid or rosin) containing
  109     ..Water-soluble inorganic B, Si, or P compound containing
  110     ...Ammonia, amine, or nitrogen base compound containing (except
              proteins)
  111     ....Physical non-water solvent containing
  112     .....Water insoluble abradant, wax or filler containing
  113     ....Water-insoluble abradant, wax or filler containing
  114     ...Physical non-water solvent containing
  115     ....Water-insoluble abradant, wax or filler containing
  116     ...Water-insoluble abradant, wax or filler containing
  117     ..Ammonia, amine, or nitrogen base compound containing (except
             proteins)
  118     ...Physical non-water solvent containing
  119     ....Water-insoluble abradant, wax or filler containing
  120     ...Water-insoluble abradant, wax or filler containing
  121     ..Organic sulpho-compound containing
  122     ..Physical non-water solvent containing
  123     ...Water-insoluble abradant, wax or filler containing
  124     ....Organic and inorganic type
  125     ....Organic type
  126     ...Hydrocarbon or halohydrocarbon containing
  127     ....Non-hydrocarbon non-soap organic compound containing
  128     ..Water-insoluble abradant, wax or filler containing
  129     ...Organic and inorganic type
  130     ...Organic type
  131     ...Inorganic type
  132     ..With other organic, plant, or animal matter or compound
  133     ..With inorganic compound or element (except alkali-metal
             hydroxides and carbonates and water)
  134     ..Shapes or structures
  135     .Water-soluble inorganic B, Si or P compound containing
  136     ..Acidicc
  523     ..Nitrogen base containing (except protein)
  524     ...Heterocyclic
  525     ...Amine or amide
  526     ....Sulfur or phosphorus containing
  527     ....Soluble carboxylic acid or salt
  528     ....Quaternary or amine oxide
  529     ....Hydroxy
  530     ..Organic sulfoxy
  531     ...Organic sulfate
  532     ....Oxy
  533     ....With acyclic sulfonate
  534     ....With aromatic sulfonate
  535     ...Aliphatic sulfonate
  536     ....Unsaturated
  537     .....With aromatic sulfonate
  538     ....Non-oxo carboxylic
  539     ...Aromatic sulfonate
  540     ....With non-ionic wetting agent or fatty alcohol
  139     ..Physical non-water solvent containing
  140     ..Water-insoluble abradant, wax or filler containing
  141     .Water-soluble cyanides or cyanates containing
  142     .Acidic
  143     ..Physical non-water solvent containing
  144     ...Water-insoluble abradant, wax or filler containing
  145     ..Water-insoluble abradant, wax or filler containing
  146     ..With corrosion inhibitants
  147     ...Compounds of elements other than C, H, O, N, S, Cl, Na, and K
              containing
  148     ...Organic nitrogen compound containing
  149     ....Thio organic compound containing
  150     .....Thiazole nucleus containing
  151     ...Organic sulphur compound containing
  541     .Nitrogen base containing (except protein)
  542     ..Heterocyclic
  543     ...Optical bleach
  544     ..Amine or amide
  545     ...Sulfur or phosphorus containing
  546     ...Soluble carboxylic acid or salt
  547     ...Quaternary or amine oxide
  548     ...Hydroxy
  153     ..Physical non-water solvent containing
  154     ...Water-insoluble abradant, wax or filler containing
  155     ..Water-insoluble abradant, wax or filler containing
  156     .Alkaline
  157     ..Gas-generative
  158     ..Physical non-water solvent containing
  159     ...Water-insoluble abradant, wax or filler containing
  160     ..Water-insoluble abradant, wax or filler containing
  549     .Organic sulfoxy
  550     ..Organic sulfate
  551     ...Oxy
  552     ...With acyclic sulfonate
  553     ...With aromatic sulfonate
  554     ..Aliphatic sulfonate
  555     ...Unsaturated
  556     ....With aromatic sulfonate
  557     ...Non-oxo carboxylic
  558     ..Aromatic sulfonatee
  559     ...With non-ionic wetting agent or fatty alcohol
  162     .Physical or chemical non-water solvent containing
  163     ..Abradant, wax, cellulose ester, inorganic solid or filler
             containing
  164     ...With oxygen organic compounds
  165     ....With organic compounds of other than C, H, and O
  166     .....With hydrocarbon solvents
  167     ....With hydrocarbon solvents
  168     .....Wax or cellulose-ester and abradant, inorganic solid or
                other filling containing
  169     .....Wax or cellulose-ester containing
  170     ..Oxygen organic compound containing
  171     ...Organic compounds of other than C, H, and O containing
  172     ..Non-hydrocarbon substances containing
  173     .Aqueous
  174     .Shapes or structures
  174.11  .Perfume containing
  174.12  .Enzyme containing
  174.13  .Coated or encapsulated particle or liquid containing
            (other than spray dried detergents)
  174.14  .Alkali metal inorganic carbonate containing
  174.15  .Organo-silicon compound containing
  174.16  .Organo-phosphorus compound containing
  174.17  .Carbohydrate moiety containing
  174.18  ..Carboxyl group containing
  174.19  .Nonpolymeric compound having at least two free carboxyl
            groups containing
  174.21  .Polyoxyalkylene compound containing
  174.22  ..Two or more polyoxyalkylene compounds containing
  174.23  .Polymer containing
  174.24  ..Carboxylic acid anhydride, free carboxyl group, or salt
             thereof containing
  174.25  .Water-insoluble inorganic compound containing
  175     WATER-SOFTENING OR PURIFYING OR SCALE-INHIBITING AGENTS
  176     .Packages or heterogeneous arrangements
  178     .Deoxidant or free-metal containing
  179     .Water-insoluble base-exchange agent containing
  180     .Plant or organic material containing
  181     ..With inorganic matter other than alkali-metal hydroxides and
             carbonates and water
  181.1   GETTERS OR GAS OR VAPOR GENERATING MATERIALS FOR ELECTRIC
           LAMPS, ELECTRIC SPACE DISCHARGE DEVICES AND SIMILAR DEVICES
  181.2   .Plural getter and/or gas or vapor generating materials
  181.3   .Reactive compositions
  181.4   ..Containing magnesium, alkali-metal or alkaline-earth
             metal or compound thereof
  181.5   .Gaseous getters
  181.6   .Metal or metal compound containing
  181.7   ..Magnesium, alkali-metal or alkaline-earth metal
  194     HUMIDOSTATIC, WATER REMOVIVE, BINDIVE, OR EMISSIVE
  *       ******************************
  *       *CLASS 502, CATALYST, SOLID..*
  *       *SORBENT OR SUPPORT THEREFOR,*
  *       *PRODUCT OR PROCESS OF.......*
  *       *MAKING. CLASS 502 IS TO BE..*
  *       *CONSIDERED AS OCCUPYING.....*
  *       *THIS POSITION IN THE CLASS..*
  *       *252 SCHEDULE FOR PURPOSES...**
  *       *OF CLASSIFICATION OF A......*
  *       *COMPOSITION HAVING A .......*
  *       *DISCLOSED OR CLAIMED........*
  *       *FUNCTION OR PROPERTY........*
  *       *PROVIDED FOR IN CLASS 252...*
  *       *IN ADDITION TO A CATALYTIC..*
  *       *OR SORPTURE USE. ...........*
  *       ******************************
  478     X-RAY OR NEUTRON SHIELD
  500     ELECTRICALLY CONDUCTIVE OR EMISSIVE COMPOSITIONS
  501.1   .Light sensitive
  502     .Elemental carbon containing
  503     ..With free metal
  504     ..With carbide
  505     ..With radioactive material
  506     ..With metal compound
  507     ...Titanium or zirconium compound
  508     ...Aluminum compound
  509     ...Magnesium, alkaline earth metal or rare earth metal compound
  510     ..With organic component
  511     ...Resin, rubber or derivative thereof containing
  512     .Free metal containing
  513     ..Iron group metal (Iron, Cobalt, Nickel)
  514     ..Noble metal (Gold, Silver, Ruthenium, Rhodium, Palladium,
             Osmium, Iridium, Platinum)
  515     ..Tungsten
  516     .Carbide containing
  517     .Radioactive material containing
  518     .Metal compound containing
  519     ..Iron group compound
  520     ..Titanium or zirconium compound
  521     ..Magnesium, alkaline earth metal or rare earth metal compound
  492     INCANDESCENT MANTLE COMPOSITIONS
  299.01  LIQUID CRYSTAL COMPOSITIONS
  299.1   .Containing pleochroic dye
  299.2   .Containing dopant salt
  299.3   .Containing charge-transfer agents
  299.4   .Containing nonchiral aligning agents
  299.5   .Containing nonchiral additive having no specified
            mesophase
  299.6   .Containing nonsteryl liquid crystalline compound of
            specified structure
  299.61  ..Including heterocyclic ring
  299.62  ..Including fused or bridged rings
  299.63  ..Including fully saturated ring
  299.64  ..Aryl ester of aryl acid having three benzene rings
  299.65  ...Benzene rings linked by direct bond
  299.66  ..Benzene rings linked by direct bond
  299.67  ..Phenyl benzoate derivative
  299.68  ..Including benzene rings bonded through azo, azoxy, or
             azomethine linkage
  299.7   .Cholesteric liquid crystal composition containing a sterol
            derivative
  582     LIGHT TRANSMISSION MODIFYING COMPOSITIONS
  583     .Modification caused by energy other than light
  584     .Inorganic crystalline solid
  585     .Producing polarized light
  586     .Displaying color changee
  587     .Infrared
  588     .Ultraviolet
  589     ..Organic material
  625     RADIOACTIVE COMPOSITIONS
  626     .Treating radioactively contaminated material
  627     ..Reprocessing nuclear fuels
  628     ..By fixation in stable solid media
  629     ...Media is glass or ceramic
  630     ..Treating gas
  631     ..Treating liquid material
  632     ...By incineration, calcination, or evaporation
  633     ..For disposal by storage in confined space
  634     .In form of sol solution or gel
  635     ..Including production of solid particles by chemical reaction
  636     .Nuclear reactor fuel
  637     ..Actinide having nonactinide component
  638     ...Oxide component
  639     ...Carbon containing component
  640     ...Free metal or metal compound component
  641     ..Actinide nitrides only
  642     ..Actinide carbides only
  643     ..Actinide oxides only
  644     .As a source of radiation or heat
  645     ..For tracing, tagging, or testing
  646     .Luminescent
  647     ..Laser
  301.16  ORGANIC LUMINESCENT MATERIAL CONTAINING COMPOSITIONS
  301.17  .Scintillating or lasing compositions
  301.18  ..Heavy metal containing
  301.19  .Inspection penetrant compositions
  301.21  .Optical brightening compositions
  301.22  ..Heterocyclic compounds having an intercyclic acyclic
             methine linkage
  301.23  ...Triazines
  301.24  ...Thiazoles or oxazoles
  301.25  ..Azine containing
  301.26  ..Six-membered ring having one hetero-N-atom
  301.27  ..Azole containing
  301.28  ...Thiazoles or oxazoles
  301.29  ...Tri- or -tetrazoles
  301.31  ..Five-membered ring having four carbon atoms and one
             nitrogen atom
  301.32  ..Hetero-S-atom or hetero-O-atom containing
  301.33  .With inorganic luminescent material
  301.34  .Natural resin, cellulose or derivatives containing
  301.35  .Synthetic resin containing
  301.36  INORGANIC LUMINESCENT COMPOSITIONS WITH ORGANIC
           NONLUMINESCENT MATERIAL
  301.4 R INORGANIC LUMINESCENT COMPOSITIONS
  301.5   .Tungsten containing
  301.6 R .Zinc or cadmium containing
  301.6 S ..Sulfur containing
  301.6 P ..Phosphorus containing
  301.6 F ..Group IV element containing
  301.4 S .Sulfur containing
  301.4 P .Phosphorus containing
  301.4 F .Group IV element containing
  301.4 H .Compositions containing halogen, e.g., halides andd
            oxyhalides
  700     CHEMILUMINESCENT
  182.1   HAVING UTILITY AS A REACTIVE MATERIAL IN AN ELECTROCHEMICAL
           CELL, E.G., BATTERY, ETC.
  184     ABSORPTIVE, OR BINDIVE, AND CHEMICALLY YIELDIVE
  185     PLUMBIFEROUS SULPHUR BINDANT OR MODIFIANT CONTAINING
  186.1   OXIDATIVE BLEACHANT, OXIDANT CONTAINING OR GENERATIVE
  186.2   .Composition containing two or more solid materials with
            defined physical dimensions, e.g., surface areas, volumes,
            etc., or process of producing said composition
  186.21  .Plural oxidants
  186.22  ..Contains plural peroxides
  186.23  ...Organic peroxide
  186.24  .Contains elemental material devoid of water
  186.25  .Composition containing a stabilizer or a product in the
            form of a surface modified, impregnated, encapsulated, or
            surface-coated article; or process of producing said
            composition
  186.26  ..Organic peroxide
  186.27  ..Inorganic peroxide
  186.28  ...Contains hydrogen peroxide
  186.29  ....With organic material
  186.3   ...Contains perborate
  186.31  ....With organic material
  186.32  ...Contains Group IA metal peroxide
  186.33  ..Contains Group VIIB or Group VIII metal or compound
             thereof
  186.34  ..Contains organohalogen compound as oxidant
  186.35  ...Chloroisocyanurate
  186.36  ..Contains free halogen or oxy-halogen acid type
  186.37  ...Contains alkaline earth metal
  186.38  .Contains activator admixed with inorganic peroxide
  186.39  ..Contains heterocyclic compound
  186.4   ...Oxygen heterocycle
  186.41  ..Hydrogen peroxide
  186.42  .Contains organic peroxide
  186.43  .Contains inorganic peroxide
  186.44  .Contains inorganic nitrogen containing compound
  187.1   .Free halogen or oxy-halogen acid type
  187.2   ..Oxidant contains halogen other than chlorine
  187.21  ..Chlorine dioxide or monoxide
  187.22  ...With elemental chlorine
  187.23  ..Chlorite
  187.24  ...Hypochlorite
  187.25  ....Alkali metal hypochlorite
  187.26  .....Sodium
  187.27  ....Alkaline earth metal hypochlorite
  187.28  .....Calcium
  187.29  ......With alkali metal compound
  187.3   ......With alkaline earth metal compound
  187.31  ..Chlorate or perchlorate
  187.32  ..Hypochlorous acid
  187.33  ..Oxidant contains N-Cl bond
  187.34  ...Chloroisocyanurate
  188.1   REDUCTIVE BLEACHANT, DEOXIDANT, REDUCTANT, OR GENERATIVE
  188.2   .Sulfur containing reductant, bleachant, deoxidant, or
            generative
  188.21  ..Sulfitee
  188.22  ...Hydrosulfite (dithionite)
  188.23  ....With organic additive
  188.24  .....Contains nitrogen
  188.25  .Hydrogen generating
  188.26  .Hydride containing
  188.27  ..Contains Al-H bond
  188.28  .Deoxidant or oxygen scavenging
  189     CO, S, NEGATIVE ELEMENT, OR ACID, BINDANT CONTAINING
  190     .With absorbents
  191     .Basis-iron containing
  192     .Alkali-metal or alkali-metal compound containing
  193     AMMONIA, ALKALI OR BASE, BINDANT CONTAINING
  302     COLLOIDS AND POTENTIAL COLLOIDS; CHEMICAL PROCESSES OF MAKING
           AND BREAKING: APPARATUS RELATED THERETO
  303     .Including separations or comminutions by colloid functions
  304     .Colloid (polyphase discontinuous dispersion) systems
  305     ..Smokes, fogs, or gaseous primary dispersants
  306     ..Liquid primary dispersants
  307     ...Foams or gaseous primary dispersands
  308     ...Organic major dispersants only
  309     ....Inorganic major dispersands only
  310     ...Water as major dispersant only
  311     ....Organic major dispersands only
  311.5   .....Bituminous dispersands
  312     .....Oil or liquid dispersands
  313.1   ....Inorganic major dispersands only
  313.2   .....Silica
  314     ...Dispersive or manipulative operations
  315.01  .Gels, coagulates or dispersands
  315.1   ..Organic
  315.2   ...Inorganic material coated, impregnated or
              surface-modified with organic material
  315.3   ...Carbohydrate or derivative
  315.4   ...Carboxylic acid ester, acid or salt thereof
  315.5   ..Metal silicate or clay
  315.6   ..Silica
  315.7   ..Alumina
  318     .Potential dispersants, or dispersands with colloidization
            inhibitants
  319     .Resolving colloids or inhibiting colloidization
  320     ..Liquid primary dispersants
  321     ...Foams or gaseous primary dispersands
  322     ...Adsorbent or solid surface functioning treating substances
  323     ....Organic and inorganic agents (except water)
  324     ....Inorganic agents (except water)
  325     ....Organic agents
  326     ...Added nongaseous dissimilar treating substances
  327     ....Added dissimilar solvents, bindants or liquid baths
  328     ....Resolving aqueous-petroleum or aqueous-hydrocarbon systems
  329     .....Organic and inorganic agents (except water)
  330     .....Inorganic agents (except water)
  331     .....Organic agents
  332     ......Organic sulphoxy compound containing
  333     .......Petroleum-sulphoxy compound containing
  334     ........Organic amine, amide or N-base containing
  335     .......Protein or carboxylic compound containing
  336     ........Organic amine, amide or N-base containing
  337     ........Carbocyclic or non-aliphatic sulphoxy or carboxylicc
                   compound containing
  338     .......Organic amine, amide or N-base containing
  339     .......With non-sulphoxy non-carboxylic non-amine compounds
  340     ......Protein or carboxylic compound containing
  341     .......Organic amine, amide or N-base containing
  342     .......Carbocyclic or non-aliphatic carboxylic compound
                  containing
  343     .......With non-carboxylic non-amine compounds
  344     ......Organic amine, amide or N-base containing
  345     ......With elements other than C, H, and O
  346     ...Vaporizing, heating or cooling
  347     ....With mechanical treatment
  348     ....With added component
  349     ...Mechanically
  350     .Gas-generating agent containing
  351     .Wetting, emulsifying, dispersing or stabilizing agents
  352     ..Organic and inorganic agents containing (except water)
  353     ..Organic sulphoxy compound containing
  354     ...Protein or carboxylic compound containing
  355     ...Organic amine, amide or N-base containing
  356     ..Protein or carboxylic compound containing
  357     ..Organic amine, amide, or N-base containing
  358     .Emulsification or liquid dispersant colloidization-inhibiting,
            emulsion breaking or liquid dispersant colloids resolving
            agents
  363.5   SOLIDS WITH SOLUTION OR DISPERSION AIDS
  364     SOLVENTS
  365     ANTI-INGESTIBLE OR DENATURED
  366     .Alcohol type
  367     SOAPS (ALKALI-METAL SALTS OF WATER-INSOLUBLE FATTY OR ROSIN
           ACIDS)
  368     .Products
  369     .Including saponification
  370     ..With subsequent operations
  372     GASEOUS COMPOSITIONS
  373     .Carbon-oxide and hydrogen containing
  374     .Nitrogen and hydrogen containing
  375     ..Nitrogen from air or elementary nitrogen only and hydrogen
             from compounds
  376     ...Hydrogen from hydrocarbons
  377     ..From elementary nitrogen and hydrogen only or purification
  378 R   EXFOLIATED OR INTUMESCED
  378 P   .Perlite
  380     PRESERVATIVE AGENTS
  381     .Anti-caking, separative or protective coatings or zones
  382     ..Foams, liquids or fluids
  383     ..Organic and inorganic matter containing
  384     ..Organic compound containing
  385     ..Inorganic compound or element containing
  387     .Anti-corrosion
  388     ..Organic compound containing
  389.1   ...Component inorganic or organic comprising element other
              than C,H,O,N,S and halogen
  389.2   ....Phosphorus containing
  389.21  .....Nitrogen and/or sulfur in phosphorus compound
  389.22  ......Pentavalent P except Hn + 2 Pn O(3)n + 1
  389.23  .....Pentavalent P except Hn + 2PnO(3)n + 1
  389.24  .....Trivalent P (e.g., phosphorus acid, phosphites, etc.))
  389.3   ....Silicon containing
  389.31  .....Organo silicon
  389.32  .....Nitrogen containing (e.g., amino, etc.)
  389.4   ....Boron containing
  389.41  .....Organo boron
  389.5   ....Chromium containing
  389.51  ....Lead containing
  389.52  ....Zinc or aluminium containing
  389.53  ....Nickel, iron, cobalt, copper, manganese, mercury or
               cadmium containing
  389.54  ....Molybdenum, arsenic, antimony, vanadium, bismuth,
               tungsten, selenium or tellurium containing
  389.61  ....Group II A metal containing
  389.62  ....Alkali metal or NH(4)+ containing
  390     ...Amine, amide, azo or nitrogen-base radical containing
  391     ....Sulphur organic compound containing
  392     ....Oxygen organic compound containing
  393     ...Phenol or quinone radical containing
  394     ...Nitrogen organic compound containing
  395     ...Sulphur organic compound containing
  396     ...Oxygen organic compound containing
  397     .Anti-oxidants or chemical change inhibitants
  398     ..Plant or animal matters of unknown compositions
  399     ..Organic compound containing
  400.1   ...Component inorganic or organic comprising element other
              than C,H,O,N,S and halogen
  400.2   ....Phosphorus containing
  400.21  .....Nitrogen or sulfur in phosphorus compound
  400.22  ......Pentavalent P, but not fully oxygenated
  400.23  .....Pentavalent P, but not fully oxygenated
  400.24  .....Trivalent P (e.g., phosphorous acid, phosphites,
                etc.)
  400.3   ....Silicon containing
  400.31  .....Organo silicon
  400.4   ....Boron containing
  400.41  .....Organo boron
  400.5   ....Chromium containing
  400.51  ....Lead containing
  400.52  ....Zinc or aluminium containing
  400.53  ....Nickel, iron, cobalt, copper, manganese, mercury or
               cadmium containing
  400.54  ....Molybdenum, arsenic, antimony, vanadium, bismuth,
               tungsten, selenium or tellurium containing
  400.61  ...Group II A metal containing
  400.62  ...Alkali metal or NH(4)+ containing
  401     ...Amine, amide, azo or nitrogen-base radical containing
  402     ....Sulphur organic compound containing
  403     ....Oxygen organic compound containing
  404     ...Phenol or quinone radical containing
  405     ...Nitrogen organic compound containing
  406     ...Sulphur organic compound containing
  407     ...Oxygen organic compound containing
  408.1   NON-REACTIVE ANALYTICAL, TESTING INDICATING COMPOSITIONS
  600     RADIATION SENSITIVE
  182.11  COMPOSTIONS CONTAINING A SINGLE CHEMICAL REACTANT OR PLURAL
           NONINTERACTIVE CHEMICAL REACTANTS, I.E., NOT VIS-A-VIS
  182.12  .Organic reactant
  182.13  ..For subsequent solid polymer treatment or preparation,,
             e.g., crosslinking, grafting, curing, hardening, vulcanizing,
             etc.
  182.14  ...Reactant contains element other than C, H, O, or N
  182.15  ....Halogen
  182.16  .....Bromine or iodine
  182.17  ....Sulfur
  182.18  ...Reactant contains ethylenic group
  182.19  ....Cyclic anhydride moiety
  182.2   ...Reactant contains isocyante (-N=C=O) or blocked
              isocyanate group
  182.21  ....Two or more reactants containing isocyanate or blocked
               isocyanate groups
  182.22  .....Urethane (-N-C(=O)-O-C-) group
  182.23  ...Reactant contains oxygen
  182.24  ....Reactant contains plural hydroxyl groups
  182.25  .....Three or more reactants containing plural hydroxyl
                groups
  182.26  .....Reactant contains nitrogen
  182.27  .....Reactant contains ether linkage
  182.28  ....Reactant contains carboxylic acid group or derivative
               thereof
  182.29  ..With stabilizer or inhibitor
  182.3   ..Reactant contains phosphorus, silicon, or sulfur atom, or
             contains metal-to carbon bond
  182.31  ..Reactant contains phenolic, phenolic ether or inorganic
             phenolate group
  182.32  .Inorganic reactant other than sulfur containing
  182.33  ..Reactant contains heavy metal
  182.34  ..Reactant contains nitrogen
  182.35  ..Reactant contains aluminum or phosphorus
  183.11  CHEMICALLY INTERACTIVE REACTANTS (VIS-A-VIS)
  183.12  .With stabilizer or inhibitor
  183.13  .Organic reactant admixed with inorganic reactant
  183.14  .Inorganic reactants only
  183.15  ..Calcium carbide precursors
  183.16  ..Contains carbonate or bicarbonate
  *       ******************************
  *       CROSS-REFERENCE ART COLLECTIONS
  *       ******************************
  950     DOPING AGENT SOURCE MATERIAL
  951     .For vapor transport
  960     SURFACE FLAW DETECTING COMPOSITIONS
  961     STRESS OR CONTACT INDICATORS
  962     TEMPERATURE OR THERMAL HISTORY
  963     HUMIDITY OR MOISTURE INDICATIORS
  964     LEAK DETECTION
  965     RETROSPECTIVE PRODUCT IDENTIFICATION (E.G., TAGS AND TRACERS,
           ETC.)
  *       ******************************
  *       DIGESTS
  *       ******************************
  DIG 1   Nonionic surface active agents
  DIG 2   Detergents containing polymers (other than soil suspending
           polymers)
  DIG 3   Detergents containing film forming materials
  DIG 4   Sulfoxides in cleaning compositions
  DIG 5   Human skin cleaning compositions
  DIG 6   Biodegradable detergentss
  DIG 7   Amphoteric surface active agents
  DIG 8   Paint removers and cleaners
  DIG 9   Azeotropes
  DIG 10  Glass cleaners
  DIG 11  Detergents containing chelating agents
  DIG 12  Detergents containing enzymes
  DIG 13  Shampoos
  DIG 14  Liquid detergents
  DIG 15  Detergents containing soil-suspending agents
  DIG 16  Detergent bars
  DIG 17  Organo phosphorus detergents
  DIG 18  Activation-platinum
  DIG 19  Detergents for spotting