WebCPC CPC COOPERATIVE PATENT CLASSIFICATION

C　j　CHEMISTRY; METALLURGY

SUBSECTION: Chemistry

C01　　INORGANIC CHEMISTRY

C01B　NON-METALLIC ELEMENTS; COMPOUNDS THEREOF;

C01C　AMMONIA; CYANOGEN; COMPOUNDS THEREOF

C01D　COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM

C01F　COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS

C01G　COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F

C01P　INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS

C02F　TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

C03B　MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES

C03C　CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS

C04B　LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g.
C05　　FERTILISERS; MANUFACTURE THEREOF

C05B　PHOSPHATIC FERTILISERS

C05C　NITROGENOUS FERTILISERS

C05D　INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE

C05F　ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE

C05G　MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS ; FERTILISERS CHARACTERISED BY THEIR FORM

C06B　EXPLOSIVES OR THERMIC COMPOSITIONS ; MANUFACTURE THEREOF; USE OF SINGLESUBSTANCES AS EXPLOSIVES

C06D　MEANS FOR GENERATING SMOKE OR MIST; GAS-ATTACK COMPOSITIONS; GENERATIONOF GAS FOR BLASTING OR PROPULSION

C06F　MATCHES; MANUFACTURE OF MATCHES

C07B　GENERAL METHODS OF ORGANIC CHEMISTRY; APPARATUS THEREFOR

C07C　ACYCLIC OR CARBOCYCLIC COMPOUNDS

C07D　HETEROCYCLIC COMPOUNDS

C07F　ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM

C07G　COMPOUNDS OF UNKNOWN CONSTITUTION

C07H　SUGARS; DERIVATIVES THEREOF

C07J　STEROIDS

C07K　PEPTIDES

C08B　POLYSACCHARIDES; DERIVATIVES THEREOF

C08C　TREATMENT OR CHEMICAL MODIFICATION OF RUBBERS

C08F　MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS

C08G　MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS

C08H　DERIVATIVES OF NATURAL MACROMOLECULAR COMPOUNDS

C08J　WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G

C08K　USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS

C08L　COMPOSITIONS OF MACROMOLECULAR COMPOUNDS

C09B　ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES; MORDANTS; LAKES

C09C　TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCETHEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK

C09D　COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS ; FILLING PASTES ; CHEMICAL PAINT OR INK REMOVERS ; INKS ; CORRECTING FLUIDS ; WOODSTAINS ; PASTES OR SOLIDS FOR COLOURING OR PRINTING ; USE OF MATERIALS THEREFOR

C09F　NATURAL RESINS; FRENCH POLISH; DRYING-OILS; DRIERS ; TURPENTINE

C09G　POLISHING COMPOSITIONS OTHER THAN FRENCH POLISH; SKI WAXES

C09H　PREPARATION OF GLUE OR GELATINE

C09J　ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES

C09K　MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE

C10B　DESTRUCTIVE DISTILLATION OF CARBONAGEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS

C10C　WORKING-UP PITCH, ASPHALT, BITUMEN, TAR; PYROLIGNEOUS ACID

C10F　DRYING OR WORKING-UP OF PEAT

C10G　CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES,e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION ; RECOVERYOF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURESMAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES

C10K　PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE

C10L　FUELS NOT OTHERWISE PROVIDED FOR ; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS

C10M　LUBRICATING COMPOSITIONS ; USE OF CHEMICAL SUBSTANCES EITHER ALONE ORAS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION

C10N　INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS

C11B　PRODUCING , REFINING AND PRESERVING FATS, FATTY SUBSTANCES, FATTY OILSAND WAXES, INCLUDING EXTRACTION FROM WASTE MATERIALS; ESSENTIAL OILS; PERFUMES

C11C　FATTY ACIDS FROM FATS, OILS OR WAXES; CANDLES; FATS, OILS OR FATTY ACIDS BY CHEMICAL MODIFICATION OF FATS, OILS, OR FATTY ACIDS OBTAINED THEREFROM

C11D　DETERGENT COMPOSITIONS ; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL

C12C　BREWING OF BEER

C12F　DISTILLATION OR RECTIFICATION OF FERMENTED SOLUTIONS; RECOVERY OF BY-PRODUCTS; DENATURING OF, OR DENATURED, ALCOHOL

C12G　WINE; OTHER ALCOHOLIC BEVERAGES; PREPARATION THEREOF

C12H　PASTEURISATION; STERILISATION; PRESERVATION; PURIFICATION; CLARIFICATION; AGEING

C12J　VINEGAR; ITS PREPARATION

C12L　PITCHING OR DEPITCHING MACHINES; CELLAR TOOLS

C12M　APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; [N:

C12N　MICRO-ORGANISMS OR ENZYMES; COMPOSITIONS THEREOF ; PROPAGATING, PRESERVINGOR MAINTAINING MICRO-ORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTUREMEDIA

C12P　FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE ]

C12Q　MEASURING OR TESTING PROCESSES INVOLVING ENZYMES OR MICRO-ORGANISMS ; COMPOSITIONS OR TEST PAPERS THEREFOR; PROCESSES OF PREPARING SUCH COMPOSITIONS; CONDITION RESPONSIVE CONTROL IN MICROBIOLOGICAL OR ENZYMOLOGICAL PROCESSES

C12R　PROCESSES USING MICRO-ORGANISMS

C12Y　ENZYMES

C13B　PRODUCTION OF SUCROSE; APPARATUS SPECIALLY ADAPTED THEREFOR

C13K　SACCHARIDES, OTHER THAN SUCROSE, OBTAINED FROM NATURAL SOURCES OR BY HYDROLYSISOF NATURALLY OCCURRING DI-, OLIGO- OR POLYSACCHARIDES

C14B　MECHANICAL TREATMENT OR PROCESSING OF SKINS, HIDES OR LEATHER IN GENERAL; PELT-SHEARING MACHINES; INTESTINE-SPLITTING MACHINES

C14C　CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g.
SUBSECTION: Metallurgy

C21　　METALLURGY OF IRON

C21B　MANUFACTURE OF IRON OR STEEL

C21C　PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS

C21D　MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHER TREATMENTS

C22B　PRODUCTION AND REFINING OF METALS ; PRETREATMENT OF RAW MATERIALS

C22C　ALLOYS

C22F　CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUSALLOYS

C23C　COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL

C23D　ENAMELLING OF, OR APPLYING A VITREOUS LAYER TO, METALS

C23F　NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE ; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25.

C23G　CLEANING OR DEGREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHERTHAN ELECTROLYSIS

C25B　ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR

C01,　C07.

C25C　PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR

C25D　PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING ; APPARATUS THEREFOR

C25F　PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROM OBJECTS; APPARATUS THEREFOR

C30B　SINGLE-CRYSTAL-GROWTH ; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIALOR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTINGOF MATERIAL ; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITHDEFINED STRUCTURE ; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIALWITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUSPOLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR

C40B　COMBINATORIAL CHEMISTRY; LIBRARIES, e.g. CHEMICAL LIBRARIES, IN SILICO LIBRARIES