| IPC 7 English version |
| C04-C04B01448 |
C04B 16/00 - C04B 28/36  |
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| SECTION C – CHEMISTRY; METALLURGY |
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| C 04 | CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES (alloys based on refractory metals C22C) [4] |
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| C 04 B | LIME; MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS (devitrified glass-ceramics C03C 10/00); REFRACTORIES; TREATMENT OF NATURAL STONE [4] |
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| Notes |
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| (1) | In this subclass, the following terms or expressions are used with the meanings indicated: [6] |
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| – | "fillers" includes pigments, aggregates and fibrous reinforcing materials; [6] |
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| – | "active ingredients" includes processing aids or property improvers, e.g. grinding aids used after the burning process or used in the absence of a burning process; [6] |
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| – | "mortars", "concrete" and "artificial stone" are to be considered as a single group of materials, and therefore, in the absence of an indication to be contrary, they include mortar, concrete and other cementitious compositions. [6] |
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| (2) | In groups C04B 7/00 to C04B 32/00, in the absence of an indication to the contrary, classification is made in the last appropriate place. [4] |
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| (3) | A composition classified in groups C04B 26/00 or C04B 28/00 is also classified in groups C04B 14/00 to C04B 24/00, if a filler or active ingredient is of interest. [4] |
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| (4) | In groups C04B 26/00 to C04B 30/00, it is desirable to add the indexing codes relating to individual constituents. The indexing codes, which are chosen from groups C04B 7/00 to C04B 24/00, with the exception of groups C04B 7/13, C04B 7/36 to C04B 7/60, C04B 9/11 to C04B 9/20, C04B 11/02 to C04B 11/036, C04B 11/28 and C04B 11/30, have the same numbers as the classification symbols, but a colon is used instead of the oblique stroke, and should be linked. [4] |
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| (5) | Attention is drawn to Chapter IV of the Guide which sets forth the rules concerning the application and presentation of the different types of indexing code. [6] |
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| Subclass Index |
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| LIME, MAGNESIA; SLAG |
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| CEMENTS |
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| MORTARS; CONCRETE; ARTIFICIAL STONE |
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| Compositions |
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| Fillers |
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| Active ingredients |
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| Porous products |
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| Influencing or modifying the properties of mortars |
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| After-treatment |
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| CERAMICS |
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| Clay-wares |
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| Other ceramics |
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| Joining |
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| Porous products |
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| After-treatment |
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| TREATMENT OF NATURAL STONE |
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| Lime; Magnesia; Slag |
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2/ | 00 | Lime, magnesia or dolomite (hydraulic lime cements C04B 7/34) [4] |
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2/ | 02 | . | Lime [4] |
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2/ | 04 | . | . | Slaking [4] |
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2/ | 06 | . | . | . | with addition of substances, e.g. hydrophobic agents [4] |
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2/ | 08 | . | . | . | Devices therefor [4] |
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2/ | 10 | . | Preheating, burning, calcining or cooling (decarbonation during burning of cement raw materials C04B 7/43) [4] |
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2/ | 12 | . | . | in shaft or vertical furnaces (shaft or vertical furnaces in general F27B 1/00) [4] |
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5/ | 00 | Treatment of molten slag (manufacture of slag wool C03B; in, or for, the production of metals C21B, C22B); Artificial stone from molten slag (mechanical aspects B28B 1/54) [4] |
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5/ | 02 | . | Granulating (apparatus B01J 2/00); Dehydrating; Drying |
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5/ | 06 | . | Ingredients, other than water, added to the molten slag; Treatment with gases or gas generating material, e.g. to obtain porous slag [4] |
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| Cements |
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7/ | 00 | Hydraulic cements (calcium sulfate cements C04B 11/00) |
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7/ | 02 | . | Portland cement |
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7/ | 04 | . | . | using raw materials containing gypsum |
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7/ | 06 | . | . | using alkaline raw materials |
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7/ | 12 | . | Natural pozzuolanas; Natural pozzuolana cements (cements containing slag C04B 7/14) [4] |
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7/ | 13 | . | . | Mixtures thereof with inorganic cementitious materials, e.g. Portland cements [4] |
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7/ | 14 | . | Cements containing slag |
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7/ | 147 | . | . | Metallurgical slag [4] |
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7/ | 153 | . | . | . | Mixtures thereof with other inorganic cementitious materials or other activators [4] |
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7/ | 17 | . | . | . | . | with calcium oxide containing activators [4] |
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7/ | 19 | . | . | . | . | . | Portland cements [4] |
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7/ | 21 | . | . | . | . | with calcium sulfate containing activators [4] |
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7/ | 22 | . | Iron ore cements |
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7/ | 24 | . | Cements from oil shales, residues or waste other than slag [4] |
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7/ | 26 | . | . | from raw materials containing flue dust |
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7/ | 28 | . | . | from combustion residues (C04B 7/26 takes precedence) [4] |
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7/ | 30 | . | . | from oil shale; from oil shale residues [4] |
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7/ | 32 | . | Aluminous cements |
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7/ | 34 | . | Hydraulic lime cements; Roman cements |
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7/ | 345 | . | Hydraulic cements not provided for in one of the groups C04B 7/02 to C04B 7/34 [4] |
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7/ | 36 | . | Manufacture of hydraulic cements in general |
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7/ | 38 | . | . | Preparing or treating the raw materials individually or as batches [4] |
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7/ | 40 | . | . | . | Dehydrating; Forming, e.g. granulating (apparatus for granulating B01J 2/00) |
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7/ | 42 | . | . | . | Active ingredients added before, or during, the burning process (after the burning process C04B 22/00, C04B 24/00) |
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7/ | 43 | . | . | Heat treatment, e.g. precalcining, burning, melting; Cooling [4] |
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7/ | 44 | . | . | . | Burning; Melting [4] |
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7/ | 45 | . | . | . | . | in fluidised beds [4] |
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7/ | 46 | . | . | . | . | electric [4] |
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7/ | 47 | . | . | . | Cooling [4] |
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7/ | 48 | . | . | Clinker treatment (C04B 7/47 takes precedence) [4] |
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7/ | 51 | . | . | . | Hydrating [4] |
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7/ | 52 | . | . | . | Grinding |
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7/ | 60 | . | . | Methods for eliminating alkali metals or compounds thereof [4] |
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9/ | 00 | Magnesium cements or silimar cements |
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9/ | 02 | . | Magnesium cements containing chlorides, e.g. Sorel cement |
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9/ | 04 | . | Magnesium cements containing sulfates, nitrates, phosphates, or fluorides |
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9/ | 06 | . | Cements containing metal compounds other than magnesium compounds, e.g. compounds of zinc or lead |
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9/ | 11 | . | Mixtures thereof with other inorganic cementitious materials [4] |
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9/ | 12 | . | . | with hydraulic cements, e.g. Portland cements [4] |
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9/ | 20 | . | Manufacture, e.g. preparing the batches (preheating, burning, calcining or cooling lime stone, magnesite or dolomite C04B 2/10) |
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11/ | 00 | Calcium sulfate cements |
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11/ | 02 | . | Dehydrating gypsum |
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11/ | 024 | . | . | Ingredients added before, or during, the calcining process, e.g. calcination modifiers [4] |
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11/ | 028 | . | . | Devices therefor [4] |
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11/ | 032 | . | . | . | for the wet process, e.g. dehydrating in solution or under saturated vapor conditions [4] |
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11/ | 036 | . | . | . | for the dry process, e.g. dehydrating in a fluidised bed or in a rotary kiln [4] |
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11/ | 05 | . | obtaining anhydrite (C04B 11/028 takes precedence) [4] |
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11/ | 06 | . | starting from anhydrite |
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11/ | 26 | . | starting from phosphogypsum or from waste, e.g. purification products of smoke (C04B 11/02 takes precedence; chemical or biological purification of waste gases B01D 53/34) [4] |
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11/ | 28 | . | Mixtures thereof with other inorganic cementitious materials (C04B 7/04, C04B 7/153 take precedence) [4] |
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11/ | 30 | . | . | with hydraulic cements, e.g. Portland cements [4] |
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12/ | 00 | Cements not provided for in groups C04B 7/00 to C04B 11/00 [4] |
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12/ | 02 | . | Phosphate cements (in, or for, the manufacture of ceramics C04B 33/00, C04B 35/00) [4] |
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12/ | 04 | . | Alkali metal or ammonium silicate cements (alkali metal silicates per se, their preparation C01B 33/32; ammonium silicates per se, their preparation C01C 1/00) [4] |
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| Use of materials as fillers (ceramics C04B 33/00, C04B 35/00; reinforcing elements for building materials E04C 5/00) [4] |
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14/ | 00 | Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone (expanding or defibrillating materials C04B 20/00) [4] |
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14/ | 02 | . | Granular materials [4] |
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14/ | 04 | . | . | Silica-rich materials; Silicates [4] |
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14/ | 06 | . | . | . | Quartz; Sand [4] |
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14/ | 08 | . | . | . | Diatomaceous earth [4] |
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14/ | 10 | . | . | . | Clay [4] |
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14/ | 12 | . | . | . | . | Expanded clay [4] |
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14/ | 14 | . | . | . | Minerals of vulcanic origin [4] |
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14/ | 16 | . | . | . | . | porous, e.g. pumice [4] |
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14/ | 18 | . | . | . | . | Perlite [4] |
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14/ | 20 | . | . | . | Mica; Vermiculite [4] |
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14/ | 22 | . | . | . | Glass [4] |
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14/ | 24 | . | . | . | . | porous, e.g. foamed glass [4] |
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14/ | 26 | . | . | Carbonates [4] |
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14/ | 28 | . | . | . | of calcium [4] |
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14/ | 30 | . | . | Oxides other than silica [4] |
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14/ | 32 | . | . | Carbides; Nitrides; Borides [4] |
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14/ | 34 | . | . | Metals [4] |
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14/ | 36 | . | . | Inorganic materials not provided for in groups C04B 14/04 to C04B 14/34 [4] |
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14/ | 38 | . | Fibrous materials; Whiskers [4] |
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14/ | 40 | . | . | Asbestos [4] |
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14/ | 42 | . | . | Glass [4] |
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14/ | 44 | . | . | . | Treatment for enhancing alkali resistance [4] |
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14/ | 46 | . | . | Rock wool [4] |
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14/ | 48 | . | . | Metal [4] |
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 | C04B 16/00 - C04B 28/36 |
