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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]
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]
C10G 1/00
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Production of liquid hydrocarbon mixtures from oil shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal (mechanical winning of oil from oil-shales, oil-sand, or the like B03B)
C10G 2/00
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Production of liquid hydrocarbon mixtures of undefined composition from oxides of carbon [5]
C10G 3/00
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Production of liquid hydrocarbon mixtures from oxygen-containing organic materials, e.g. fatty oils, fatty acids (production from non-melting solid oxygen-containing carbonaceous materials C10G 1/00; preparation of individual hydrocarbons or mixtures thereof of definite or specified constitution C07C)
C10G 5/00
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Recovery of liquid hydrocarbon mixtures from gases, e.g. natural gas
C10G 7/00
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Distillation of hydrocarbon oils (distillation in general B01D)
C10G 9/00
Cracking in the absence of hydrogen
C10G 9/00
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Thermal non-catalytic cracking, in the absence of hydrogen, of hydrocarbon oils
C10G 11/00
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Catalytic cracking, in the absence of hydrogen, of hydrocarbon oils (cracking in direct contact with molten metals or salts C10G 9/34)
C10G 15/00

C10G 15/00
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Cracking of hydrocarbon oils by electric means, electromagnetic or mechanical vibrations, by particle radiation or with gases superheated in electric arcs
C10G 17/00
Refining in the absence of hydrogen
C10G 17/00
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Refining of hydrocarbon oils, in the absence of hydrogen, with acids, acid-forming compounds, or acid-containing liquids, e.g. acid sludge
C10G 19/00
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Refining hydrocarbon oils, in the absence of hydrogen, by alkaline treatment
C10G 21/00
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Refining of hydrocarbon oils, in the absence of hydrogen, by extraction with selective solvents (C10G 17/00, C10G 19/00 take precedence; de-waxing oils C10G 73/02)
C10G 25/00
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Refining of hydrocarbon oils, in the absence of hydrogen, with solid sorbents
C10G 27/00
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Refining of hydrocarbon oils, in the absence of hydrogen, by oxidation
C10G 29/00
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Refining of hydrocarbon oils, in the absence of hydrogen, with other chemicals
C10G 31/00
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Refining of hydrocarbon oils, in the absence of hydrogen, by methods not otherwise provided for (by distillation C10G 7/00) [2]
C10G 32/00

C10G 32/00
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Refining of hydrocarbon oils by electric or magnetic means, by irradiation, or by using microorganisms [3]
C10G 33/00
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De-watering or demulsification of hydrocarbon oils (by distillation C10G 7/04)
C10G 35/00
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Reforming naphtha
C10G 45/00
Hydrotreatment processes (reforming of naphtha C10G 35/00)
C10G 45/00
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Refining of hydrocarbon oils using hydrogen or hydrogen-generating compounds [3]
C10G 47/00
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Cracking of hydrocarbon oils, in the presence of hydrogen or hydrogen-generating compounds, to obtain lower boiling fractions (C10G 15/00 takes precedence; destructive hydrogenation of non-melting solid carbonaceous or similar materials C10G 1/06) [3]
C10G 49/00
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Treatment of hydrocarbon oils, in the presence of hydrogen or hydrogen-generating compounds, not provided for in a single one of groups C10G 45/02, C10G 45/32, C10G 45/44, C10G 45/58, or C10G 47/00 [3]
C10G 50/00

C10G 50/00
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Production of liquid hydrocarbon mixtures from lower carbon number hydrocarbons, e.g. by oligomerisation (preparation of individual hydrocarbons or mixtures thereof of definite or specified constitution C07C) [6]
C10G 50/02
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of hydrocarbon oils for lubricating purposes [6]
C10G 51/00
Multi-step processes
C10G 51/00
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Treatment of hydrocarbon oils, in the absence of hydrogen, by two or more cracking processes only [3]
C10G 53/00
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Treatment of hydrocarbon oils, in the absence of hydrogen, by two or more refining processes [3]
C10G 55/00
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Treatment of hydrocarbon oils, in the absence of hydrogen, by at least one refining process and at least one cracking process [3]
C10G 57/00
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Treatment of hydrocarbon oils, in the absence of hydrogen, by at least one cracking process or refining process and at least one other conversion process [3]
C10G 59/00
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Treatment of naphtha by two or more reforming processes only or by at least one reforming process and at least one process which does not substantially change the boiling range of the naphtha [3]
C10G 61/00
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Treatment of naphtha by at least one reforming process and at least one process of refining in the absence of hydrogen [3]
C10G 63/00
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Treatment of naphtha by at least one reforming process and at least one other conversion process (C10G 59/00, C10G 61/00 take precedence) [3]
C10G 65/00
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Treatment of hydrocarbon oils by two or more hydrotreatment processes only [3]
C10G 67/00
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Treatment of hydrocarbon oils by at least one hydrotreatment process and at least one process for refining in the absence of hydrogen only [3]
C10G 69/00
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Treatment of hydrocarbon oils by at least one hydrotreatment process and at least one other conversion process (C10G 67/00 takes precedence) [3]
C10G 70/00

C10G 70/00
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Working-up undefined normally gaseous mixtures obtained by processes covered by groups C10G 9/00, C10G 11/00, C10G 15/00, C10G 47/00, C10G 51/00 [5]
C10G 71/00
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Treatment by methods not otherwise provided for of hydrocarbon oils or fatty oils for lubricating purposes (lubricating compositions C10M) [3]
C10G 73/00
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Recovery or refining of mineral waxes, e.g. montan wax (compositions essentially based on waxes C08L 91/00) [3]
C10G 75/00
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Inhibiting corrosion or fouling in apparatus for treatment or conversion of hydrocarbon oils, in general (C10G 7/10, C10G 9/16 take precedence; protection of pipes against corrosion or incrustation F16L 58/00) [6]
C10G 99/00
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Subject matter not provided for in other groups of this subclass [2006.01]
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 FOR (fuels for generating pressure gas, e.g. for rockets, C06D 5/00; candles C11C; nuclear fuel G21C 3/00)NATURAL GASSYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10KLIQUEFIED PETROLEUM GASADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVALFIRE-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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