| C01B |
Non-metallic elementscompounds thereof |
| C01C |
Ammoniacyanogencompounds 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 woolsupplementary processes in the manufacture or shaping of glass, or of mineral or slag wool |
| C03C |
Chemical composition of glasses, glazes or vitreous enamelssurface treatment of glasssurface treatment of fibres or filaments made from glass, minerals or slagsjoining glass to glass or other materials |
| C04B |
Limemagnesiaslagcementscompositions thereof, e.g. mortars, concrete or like building materialsartificial stoneceramicsrefractoriestreatment 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 activityfertilisers characterised by their form |
| C06B |
Explosive or thermic compositionsmanufacture thereofuse of single substances as explosives |
| C06C |
Detonating or priming devicesfuseschemical lighterspyrophoric compositions |
| C06D |
Means for generating smoke or mistgas-attack compositionsgeneration of gas for blasting or propulsion (chemical part) |
| C06F |
Matchesmanufacture of matches |
| C07B |
General methods of organic chemistryapparatus 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 |
Sugarsderivatives thereofnucleosidesnucleotidesnucleic acids |
| C07J |
Steroids |
| C07K |
Peptides |
| C08B |
Polysaccharidesderivatives 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-upgeneral processes of compoundingafter-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 dyesmordantslakes |
| C09C |
Treatment of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling propertiespreparation of carbon black |
| C09D |
Coating compositions, e.g. paints, varnishes or lacquersfilling pasteschemical paint or ink removersinkscorrecting fluidswoodstainspastes or solids for colouring or printinguse of materials therefor |
| C09F |
Natural resinsfrench polishdrying-oilsoil drying agents, i.e. siccativesturpentine |
| C09G |
Polishing compositionsski waxes |
| C09H |
Preparation of glue or gelatine |
| C09J |
Adhesivesnon-mechanical aspects of adhesive processes in generaladhesive processes not provided for elsewhereuse of materials as adhesives |
| C09K |
Materials for applications not otherwise provided forapplications 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, bitumenpyroligneous acid |
| C10F |
Drying or working-up of peat |
| C10G |
Cracking hydrocarbon oilsproduction of liquid hydrocarbon mixtures, e.g. by destructive hydrogenation, oligomerisation, polymerisationrecovery of hydrocarbon oils from oil-shale, oil-sand, or gasesrefining mixtures mainly consisting of hydrocarbonsreforming of naphthamineral 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 fornatural gassynthetic natural gas obtained by processes not covered by subclasses or liquefied petroleum gas use of additives to fuels or fires fire-lighters |
| C10M |
Lubricating compositionsuse 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 waxesessential oilsperfumes |
| C11C |
Fatty acids obtained from fats, oils or waxescandlesfats, oils or fatty acids obtained by chemical modification of fats, oils or fatty acids |
| C11D |
Detergent compositionsuse of single substances as detergentssoap or soap-makingresin soapsrecovery of glycerol |
| C12C |
Beerpreparation of beer by fermentationpreparation of malt for making beerpreparation of hops for making beer |
| C12F |
Recovery of by-products of fermented solutionsdenatured alcoholpreparation thereof |
| C12G |
Winepreparation thereofalcoholic beveragespreparation of alcoholic beverages not provided for in subclasses or |
| C12H |
Pasteurisation, sterilisation, preservation, purification, clarification or ageing of alcoholic beveragesmethods for altering the alcohol content of fermented solutions or alcoholic beverages |
| C12J |
Vinegarpreparation or purification thereof |
| C12L |
Pitching or depitching machinescellar tools |
| C12M |
Apparatus for enzymology or microbiology |
| C12N |
Microorganisms or enzymescompositions thereofpropagating, preserving, or maintaining microorganismsmutation or genetic engineeringculture 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 microorganismscompositions or test papers thereforprocesses of preparing such compositionscondition-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 sucroseapparatus 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 generalpelt-shearing machinesintestine-splitting machines |
| C14C |
Treating skins, hides or leather with chemicals, enzymes or microorganisms, e.g. tanning, impregnating or finishingapparatus thereforcompositions for tanning |
| C21B |
Manufacture of iron or steel |
| C21C |
Processing of pig-iron, e.g. refining, manufacture of wrought-iron or steeltreatment in molten state of ferrous alloys |
| C21D |
Modifying the physical structure of ferrous metalsgeneral devices for heat treatment of ferrous or non-ferrous metals or alloysmaking metal malleable, e.g. by decarburisation or tempering |
| C22B |
Production or refining of metalspretreatment of raw materials |
| C22C |
Alloys |
| C22F |
Changing the physical structure of non-ferrous metals or non-ferrous alloys |
| C23C |
Coating metallic materialcoating material with metallic materialsurface treatment of metallic material by diffusion into the surface, by chemical conversion or substitutioncoating 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 surfacesinhibiting corrosion of metallic materialinhibiting incrustation in generalmulti-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 degreasing of metallic material by chemical methods other than electrolysis |
| C25B |
Electrolytic or electrophoretic processes for the production of compounds or non- metalsapparatus therefor |
| C25C |
Processes for the electrolytic production, recovery or refining of metalsapparatus therefor |
| C25D |
Processes for the electrolytic or electrophoretic production of coatingselectroformingjoining workpieces by electrolysisapparatus therefor |
| C25F |
Processes for the electrolytic removal of materials from objectsapparatus therefor |
| C30B |
Single-crystal growthunidirectional solidification of eutectic material or unidirectional demixing of eutectoid materialrefining by zone-melting of materialproduction of a homogeneous polycrystalline material with defined structuresingle crystals or homogeneous polycrystalline material with defined structureafter-treatment of single crystals or a homogeneous polycrystalline material with defined structureapparatus therefor |
| C40B |
Combinatorial chemistrylibraries, e.g. chemical libraries |
| C99Z |
Subject matter not otherwise provided for in this section |
