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A
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SECTION A — HUMAN NECESSITIES
B
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SECTION B — PERFORMING OPERATIONSTRANSPORTING
C
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SECTION C — CHEMISTRYMETALLURGY
C01
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CHEMISTRY
C01
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INORGANIC CHEMISTRY (processing powders of inorganic compounds preparatory to the manufacturing of ceramic products C04B 35/00; fermentation or enzyme-using processes for the preparation of elements or inorganic compounds except carbon dioxide C12P 3/00; obtaining metal compounds from mixtures, e.g. ores, which are intermediate compounds in a metallurgical process for obtaining a free metal C21B, C22B; production of non-metallic elements or inorganic compounds by electrolysis or electrophoresis C25B)
C02
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TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE (settling tanks, filtering, e.g. sand filters or screening devices, B01D)
C03
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GLASSMINERAL OR SLAG WOOL
C04
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CEMENTSCONCRETEARTIFICIAL STONECERAMICSREFRACTORIES (alloys based on refractory metals C22C) [4]
C05
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FERTILISERSMANUFACTURE THEREOF (processes or devices for granulating materials, in general B01J 2/00; soil-conditioning or soil-stabilising materials C09K 17/00) [4]
C06
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EXPLOSIVESMATCHES
C07
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ORGANIC CHEMISTRY (such compounds as the oxides, sulfides, or oxysulfides of carbon, cyanogen, phosgene, hydrocyanic acid or salts thereof C01; products obtained from layered base-exchange silicates by ion-exchange with organic compounds such as ammonium, phosphonium or sulfonium compounds or by intercalation of organic compounds C01B 33/44; macromolecular compounds C08; dyes C09; fermentation products C12; fermentation or enzyme-using processes to synthesise a desired chemical compound or composition or to separate optical isomers from a racemic mixture C12P; production of organic compounds by electrolysis or electrophoresis C25B 3/00, C25B 7/00) [2]
C08
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ORGANIC MACROMOLECULAR COMPOUNDSTHEIR PREPARATION OR CHEMICAL WORKING-UPCOMPOSITIONS BASED THEREON (manufacture or treatment of artificial threads, fibres, bristles or ribbons D01)
C09
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DYESPAINTSPOLISHESNATURAL RESINSADHESIVESCOMPOSITIONS NOT OTHERWISE PROVIDED FORAPPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
C10
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PETROLEUM, GAS OR COKE INDUSTRIESTECHNICAL GASES CONTAINING CARBON MONOXIDEFUELSLUBRICANTSPEAT
C10B
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DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS (cracking oils C10G; underground gasification of minerals E21B 43/295) [5]
C10B 1/00
Retorts or coke ovens
C10B 1/00
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Retorts
C10B 3/00
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Coke ovens with vertical chambers
C10B 5/00
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Coke ovens with horizontal chambers
C10B 7/00
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Coke ovens with mechanical conveying means for the raw material inside the oven
C10B 9/00
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Beehive ovens
C10B 11/00
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Coke ovens with inclined chambers
C10B 13/00
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Coke ovens with means for bringing and keeping the charge under mechanical pressure
C10B 15/00
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Other coke ovens
C10B 17/00
Heating of coke ovens
C10B 17/00
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Preheating of coke ovens
C10B 19/00
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Heating of coke ovens by electrical means
C10B 21/00
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Heating of coke ovens with combustible gases
C10B 23/00
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Other methods of heating coke ovens
C10B 25/00

C10B 25/00
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Doors or closures for coke ovens
C10B 27/00
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Arrangements for withdrawal of the distillation gases
C10B 29/00
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Other details of coke ovens
C10B 31/00
Devices for charging or discharging coke ovensMechanical treatments of coal charges
C10B 31/00
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Charging devices for coke ovens
C10B 33/00
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Discharging devices for coke ovensCoke guides
C10B 35/00
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Combined charging and discharging devices for coke ovens
C10B 37/00
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Mechanical treatments of coal charges in the oven
C10B 39/00

C10B 39/00
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Cooling or quenching coke
C10B 41/00
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Safety devices, e.g. signalling or controlling devices for use in the discharge of coke
C10B 43/00
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Preventing or removing incrustations
C10B 45/00
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Other details
C10B 47/00
Carbonising or coking processes
C10B 47/00
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Destructive distillation of solid carbonaceous materials with indirect heating, e.g. by external combustion
C10B 49/00
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Destructive distillation of solid carbonaceous materials by direct heating with heat-carrying agents including the partial combustion of the solid material to be treated
C10B 51/00
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Destructive distillation of solid carbonaceous materials by combined direct and indirect heating
C10B 53/00
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Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form (wet carbonising of peat C10F)
C10B 55/00
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Coking mineral oils, bitumen, tar or the like, or mixtures thereof, with solid carbonaceous materials (cracking oils C10G)
C10B 57/00
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Other carbonising or coking processesFeatures of destructive distillation processes in general
C10C
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WORKING-UP TAR, PITCH, ASPHALT, BITUMENPYROLIGNEOUS ACID (compositions of bituminous materials C08L 95/00; carbon filaments by decomposition of organic filaments D01F 9/14)
C10F
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DRYING OR WORKING-UP OF PEAT [5]
C10G
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CRACKING HYDROCARBON OILSPRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION (cracking to hydrogen or synthesis gas C01B; cracking or pyrolysis of hydrocarbon gases to individual hydrocarbons or mixtures thereof of definite or specified constitution C07C; cracking to cokes C10B)RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASESREFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONSREFORMING OF NAPHTHAMINERAL WAXES (inhibiting corrosion or incrustation in general C23F) [6]
C10H
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PRODUCTION OF ACETYLENE BY WET METHODS (purification of acetylene C07C 11/24) [5]
C10J
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PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES (synthesis gas from liquid or gaseous hydrocarbons C01B; underground gasification of minerals E21B 43/295)CARBURETTING AIR OR OTHER GASES [5]
C10K
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PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
C10L
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FUELS NOT OTHERWISE PROVIDED FORNATURAL GASSYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G OR  C10KLIQUEFIED PETROLEUM GAS USE OF ADDITIVES TO FUELS OR FIRES FIRE-LIGHTERS [5]
C10M
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LUBRICATING COMPOSITIONS (well drilling compositions C09K 8/02)USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION (mould release, i.e. separating, agents for metals B22C 3/00, for plastics or substances in a plastic state, in general B29C 33/56, for glass C03B 40/02; textile lubricating compositions D06M 11/00, D06M 13/00, D06M 15/00; use of particular substances in particular apparatus or conditions, seeF16N or the relevant groups for the application, e.g. A21D 8/08, B21C 9/00, H01B 3/18; immersion oils for microscopy G02B 21/33) [4]
C10N
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INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M [4]
C11
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ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXESFATTY ACIDS THEREFROMDETERGENTSCANDLES (edible oil or fat compositions A23)
C12
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BIOCHEMISTRYBEERSPIRITSWINEVINEGARMICROBIOLOGYENZYMOLOGYMUTATION OR GENETIC ENGINEERING
C13
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SUGAR INDUSTRY (polysaccharides, e.g. starch, derivatives thereof C08B; malt C12C) [4]
C14
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SKINSHIDESPELTSLEATHER
C21
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METALLURGY
C21
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METALLURGY OF IRON
C22
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METALLURGY (of iron C21)FERROUS OR NON-FERROUS ALLOYSTREATMENT OF ALLOYS OR NON-FERROUS METALS (general methods or devices for heat treatment of ferrous or non-ferrous metals or alloys C21D; production of metals by electrolysis or electrophoresis C25)
C23
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COATING METALLIC MATERIALCOATING MATERIAL WITH METALLIC MATERIAL (by metallising textiles D06M 11/83; decorating textiles by locally metallising D06Q 1/04)CHEMICAL SURFACE TREATMENTDIFFUSION TREATMENT OF METALLIC MATERIALCOATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL (for specific applications, see the relevant places, e.g. for manufacturing resistors H01C 17/06)INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL (treating metal surfaces or coating of metals by electrolysis or electrophoresis C25D, C25F) [2]
C25
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ELECTROLYTIC OR ELECTROPHORETIC PROCESSESAPPARATUS THEREFOR (electrodialysis, electro-osmosis, separation of liquids by electricity B01D; working of metal by the action of a high concentration of electric current B23H; treatment of water, waste water or sewage by electrochemical methods C02F 1/46; surface treatment of metallic material or coating involving at least one process provided for in class C23 and at least one process covered by this class C23C 28/00, C23F 17/00; anodic or cathodic protection C23F; single-crystal growth C30B; metallising textiles D06M 11/83; decorating textiles by locally metallising D06Q 1/04; electrochemical methods of analysis G01N; electrochemical measuring, indicating or recording devices G01R; electrolytic circuit elements, e.g. capacitors, H01G; electrochemical current or voltage generators H01M) [4]
C30
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CRYSTAL GROWTH (separation by crystallisation in general B01D 9/00) [3]
C40
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COMBINATORIAL TECHNOLOGY [2006.01]
C40
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COMBINATORIAL TECHNOLOGY [2006.01]
C99
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SUBJECT MATTER NOT OTHERWISE PROVIDED FOR IN THIS SECTION [2006.01]
D
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SECTION D — TEXTILESPAPER
E
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SECTION E — FIXED CONSTRUCTIONS
F
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SECTION F — MECHANICAL ENGINEERINGLIGHTINGHEATINGWEAPONSBLASTING
G
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SECTION G — PHYSICS
H
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SECTION H — ELECTRICITY

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