| 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 or |
| C02F |
Treatment of water, waste water, sewage, or sludge |
| C03B |
Manufacture or shaping of glass, or of mineral or slag wool; supplementary processes in the manufacture or shaping of glass, or of mineral or slag wool |
| C03C |
Chemical composition of glasses, glazes or vitreous enamels; surface treatment of glass; surface treatment of fibres or filaments made from glass, minerals or slags; joining glass to glass or other materials |
| C04B |
Lime; magnesia; slag; cements; compositions thereof, e.g. mortars, concrete or like building materials; artificial stone; ceramics; refractories; treatment of natural stone |
| C05B |
Phosphatic fertilisers |
| C05C |
Nitrogenous fertilisers |
| C05D |
Inorganic fertilisers not covered by subclasses , ; fertilisers producing carbon dioxide |
| C05F |
Organic fertilisers not covered by subclasses , , e.g. fertilisers from waste or refuse |
| C05G |
Mixtures of fertilisers covered individually by different subclasses of class ; mixtures of one or more fertilisers with additives not having a specific fertilising activity; fertilisers characterised by their form |
| C06B |
Explosive or thermic compositions; manufacture thereof; use of single substances as explosives |
| C06C |
Detonating or priming devices; fuses; chemical lighters; pyrophoric compositions |
| C06D |
Means for generating smoke or mist; gas-attack compositions; generation of gas for blasting or propulsion (chemical part) |
| 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; nucleosides; nucleotides; nucleic acids |
| 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 carbon-to-carbon unsaturated bonds |
| C08H |
Derivatives of natural macromolecular compounds |
| C08J |
Working-up; general processes of compounding; after-treatment not covered by subclasses , , , or |
| 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 enhance their 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 (siccatives); turpentine |
| C09G |
Polishing compositions; 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 applications not otherwise provided for; applications of materials not otherwise provided for |
| C10B |
Destructive distillation of carbonaceous materials for production of gas, coke, tar, or similar materials |
| C10C |
Working-up tar, pitch, asphalt, bitumen; 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; recovery of hydrocarbon oils from oil-shale, oil-sand, or gases; refining mixtures mainly consisting of hydrocarbons; reforming of naphtha; mineral waxes |
| C10H |
Production of acetylene by wet methods |
| C10J |
Production of gases containing carbon monoxide and hydrogen from solid carbonaceous materials by partial oxidation processes involving oxygen or steam ; carburetting air or other gases |
| 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 or ; liquefied petroleum gas; use of additives to fuels or fires; fire-lighters |
| C10M |
Lubricating compositions; use of chemical substances either alone or as lubricating ingredients in a lubricating composition |
| C10N |
Indexing scheme associated with subclass |
| C11B |
Producing, e.g. by pressing raw materials or by extraction from waste materials, refining or preserving fats, fatty substances, e.g. lanolin, fatty oils or waxes; essential oils; perfumes |
| C11C |
Fatty acids obtained from fats, oils or waxes; candles; fats, oils or fatty acids obtained by chemical modification of fats, oils or fatty acids |
| C11D |
Detergent compositions; use of single substances as detergents; soap or soap-making; resin soaps; recovery of glycerol |
| C12C |
Beer; preparation of beer by fermentation; preparation of malt for making beer; preparation of hops for making beer |
| C12F |
Recovery of by-products of fermented solutions; denatured alcohol; preparation thereof |
| C12G |
Wine; preparation thereof; alcoholic beverages; preparation of alcoholic beverages not provided for in subclasses or |
| C12H |
Pasteurisation, sterilisation, preservation, purification, clarification or ageing of alcoholic beverages; methods for altering the alcohol content of fermented solutions or alcoholic beverages |
| C12J |
Vinegar; preparation or purification thereof |
| C12L |
Pitching or depitching machines; cellar tools |
| C12M |
Apparatus for enzymology or microbiology |
| C12N |
Microorganisms or enzymes; compositions thereof; propagating, preserving, or maintaining microorganisms; mutation or genetic engineering; culture media |
| 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, nucleic acids or microorganisms; compositions or test papers therefor; processes of preparing such compositions; condition-responsive control in microbiological or enzymological processes |
| C12R |
Indexing scheme associated with subclasses , relating to microorganisms |
| C12S |
Processes using enzymes or micro-organisms to liberate, separate or purify a pre-existing compound or composition (biological treatment of water, waste water, or sewage C02F 3/00, of sludge C02F 11/02; processes using enzymes or micro-organisms to separate optical isomers from a racemic mixture C12P 41/00); processes using enzymes or micro-organisms to treat textiles or to clean solid surfaces of materials |
| C13B |
Production of sucrose; apparatus specially adapted therefor |
| C13K |
Saccharides obtained from natural sources or by hydrolysis of naturally occurring disaccharides, oligosaccharides or polysaccharides |
| C14B |
Mechanical treatment or processing of skins, hides, or leather in general; pelt-shearing machines; intestine-splitting machines |
| C14C |
Treating skins, hides or leather with chemicals, enzymes or microorganisms, e.g. tanning, impregnating or finishing; apparatus therefor; compositions for tanning |
| 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, e.g. by decarburisation or tempering |
| C22B |
Production or refining of metals; pretreatment of raw materials |
| C22C |
Alloys |
| C22F |
Changing the physical structure of non-ferrous metals or non-ferrous alloys |
| 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 surfaces; inhibiting corrosion of metallic material; inhibiting incrustation in general; multi-step processes for surface treatment of metallic material involving at least one process provided for in class and at least one process covered by subclass or or class |
| C23G |
Cleaning or de-greasing of metallic material by chemical methods other than electrolysis |
| C25B |
Electrolytic or electrophoretic processes for the production of compounds or non- metals; apparatus therefor |
| C25C |
Processes for the electrolytic production, recovery or refining of metals; apparatus therefor |
| C25D |
Processes for the electrolytic or electrophoretic production of coatings; electroforming; joining workpieces by electrolysis; apparatus therefor |
| C25F |
Processes for the electrolytic removal of materials from objects; apparatus therefor |
| C30B |
Single-crystal growth; unidirectional solidification of eutectic material or unidirectional demixing of eutectoid material; refining by zone-melting of material; production of a homogeneous polycrystalline material with defined structure; single crystals or homogeneous polycrystalline material with defined structure; after-treatment of single crystals or a homogeneous polycrystalline material with defined structure; apparatus therefor |
| C40B |
Combinatorial chemistry; libraries, e.g. chemical libraries |
| C99Z |
Subject matter not otherwise provided for in this section |
