C04B LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE ; CERAMICS (devitrified glass-ceramics C03C10/00); REFRACTORIES; TREATMENT OF NATURAL STONE
Introduced: September 1968
Description
C04B covers the manufacture, composition, and properties of inorganic binding materials and their derivatives, including lime, magnesia, and cementitious materials (Portland cement, slag cements, etc.), as well as their composite applications in mortars, concrete, and other building materials. The class encompasses artificial stone production, ceramic materials and manufacturing processes, and refractory compositions designed for high-temperature applications. Also included are methods and materials for treating, processing, or modifying natural stone products for construction or industrial use.
Title
Titles differ between systems:
IPC: LIME; MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
CPC: LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE ; CERAMICS (devitrified glass-ceramics C03C10/00); REFRACTORIES; TREATMENT OF NATURAL STONE
Full Title
Full titles differ between systems:
LIME; MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE ; CERAMICS (devitrified glass-ceramics C03C10/00); REFRACTORIES; TREATMENT OF NATURAL STONE
Additional Content IPC
Glossary
Active ingredients active ingredient Ingredients having an effect on the mortar-, concrete- or artificial stone composition during processing or on the characteristics of the final product, e.g. as set accelerator, as dispersant or as gas generating agent. Other examples are processing aids or property improvers, e.g. grinding aids, used after the cement burning process or in the absence of such a burning process. Cement cements The binder proper, i.e. excluding any additional ingredient or additive added to the finished binder as such, with the exception of mixtures of binders. Cement composition Cement compositions In patent literature this term might be used in the sense of " cement " as well as in the sense of a "mortar-, concrete- or artificial stone composition". For classification and search, the term must be interpreted using the Glossary as guidance. Clinker Clinkers The unground sintered product leaving the cement kiln. In patent literature this term might be used literally, i.e. to indicate the unground sintered product leaving the cement kiln, or it might be used to indicate the ground cement without any additive, i.e. not interground with additives such as gypsum. Ceramics Inorganic, non metallic products obtained by a process involving a shaping step and a sintering or comparable heat treatment step, with the exclusion of cements , cermets and glasses, glazes, vitreous enamels and devitrified glass ceramics . Fillers filler Inactive ingredients, include pigments, aggregates and fibrous reinforcing materials. Fine ceramics Ceramics having a polycrystalline fine-grained microstructure, e.g. of dimensions below 100 micrometer. Hydraulic binder Hydraulic binders For the purpose of classification and search in this subclass, the terms " cement " and " hydraulic binder " are considered to be equivalent, even if in literature, an hydraulic binder might be defined as a mixture of cement and one or more inorganic additives. Mortar-, concrete- and artificial stone compositions Mortar-, concrete- or artificial stone composition Compositions of mortars, concrete or artificial stone Mortars, concrete or artificial stone Mortars, concrete, artificial stone They are considered as a single group of materials, are mixtures of one or more binders with fillers or other ingredients. In the context of such compositions, the terms " cement " and "binder" are considered equivalent. Resin mortar or resin concrete Mortar or concrete containing resin as a binder instead of cement , i.e. excluding any inorganic binder and containing a considerable amount of inorganic filler compared with the amount of the organic binder. Refractories Ceramics or mortars withstanding high temperatures of at least about 1500 degrees C. For classification and search in this subclass no substantial distinction is made between the terms "refractories" and "ceramics". Porous materials porous material Materials which are deliberately made porous, e.g. by adding gas-forming, foaming, burnable or lightweight additives to the composition they are made of.
Limiting references
Granulating apparatus Mechanical features relating to the working of mortars, concrete, stone, clay-wares or ceramics, e.g. mixing or shaping ceramic compositions, boring natural stone Chemical preparation of powders of inorganic compounds Devitrified glass-ceramics Compositions containing free metal bonded to carbides, diamond, oxides, borides, nitrides, silicides, e.g. cermets, or other metal compounds, such as oxynitrides or sulfides, other than as macroscopic reinforcing agents Building elements or constructions; Finishing work on buildings
Of 30 combined children, 22 exist in both systems.
6 codes are CPC-only extensions, 2 exist only in IPC.
Note: 6 CPC extensions are marked as secondary classification only.
13 shared codes have differing titles between IPC and CPC.
Child Classifications
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- C04B 111/00 Function, property or use of the mortars, concrete or artificial stone since 1995 −17 IPC IPC only IPC only
- C04B 12/00 Cements not provided for in groups C04B7/00 - C04B11/00 since 1985 +2 CPC IPC+CPC Available in IPC and CPC
- C04B 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 C04B20/00) since 1985 +1 CPC IPC+CPC Available in IPC and CPC
- C04B 16/00 Use of organic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of organic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone since 1985 IPC+CPC Available in IPC and CPC
- C04B 18/00 Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone (use of waste materials for the manufacture of cement C04B7/24); Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone since 1985 IPC+CPC Available in IPC and CPC
- C04B 2/00 Lime, magnesia or dolomite (hydraulic lime cements C04B7/34) since 1985 +1 CPC IPC+CPC Available in IPC and CPC
- C04B 20/00 Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials since 1985 +5 CPC IPC+CPC Available in IPC and CPC
- C04B 2103/00 Function or property of ingredients for mortars, concrete or artificial stone 2nd only +23 CPC CPC only CPC only
- C04B 2111/00 Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use 2nd only +25 CPC CPC only CPC only
- C04B 22/00 Use of inorganic materials as active ingredients for mortars, concrete or artificial stone, e.g. accelerators since 1985 +7 CPC IPC+CPC Available in IPC and CPC
- C04B 2201/00 Mortars, concrete or artificial stone characterised by specific physical values 2nd only +6 CPC CPC only CPC only
- C04B 2235/00 Aspects relating to ceramic starting mixtures or sintered ceramic products 2nd only +4 CPC CPC only CPC only
- C04B 2237/00 Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating 2nd only +3 CPC CPC only CPC only
- C04B 2290/00 Organisational aspects of production methods, equipment or plants 2nd only +2 CPC CPC only CPC only
- C04B 24/00 Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers since 1985 +5 CPC IPC+CPC Available in IPC and CPC
- C04B 26/00 Compositions of mortars, concrete or artificial stone, containing only organic binders since 1985 +2 CPC IPC+CPC Available in IPC and CPC
- C04B 28/00 Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements since 1985 +4 CPC IPC+CPC Available in IPC and CPC
- C04B 30/00 Compositions for artificial stone, not containing binders since 1985 IPC+CPC Available in IPC and CPC
Top Applicants
Top Applicants (IPC)
Class C04,2013–2023, worldwide · Source: EPO PATSTAT
- CHINESE ACADEMY OF SCIENCES 2,095
- WUHAN UNIVERSITY OF TECHNOLOGY 1,205
- NGK INSULATORS JP 1,133
- HALLIBURTON ENERGY SERVICES GROUP US 1,049
- SIKA TECHNOLOGY CH 1,041
- GUILIN UNIVERSITY OF TECHNOLOGY 807
- WUHAN UNIVERSITY OF SCIENCE AND TECHNOLOGY 806
- SOUTHEAST UNIVERSITY 801
- CORNING US 777
- UNITED STATES GYPSUM COMPANY US 739
Top Applicants (CPC)
Class C04,2013–2023, worldwide · Source: EPO PATSTAT
- HALLIBURTON ENERGY SERVICES GROUP US 2,158
- CHINESE ACADEMY OF SCIENCES 1,569
- NGK INSULATORS JP 1,504
- SIKA TECHNOLOGY CH 1,181
- CORNING US 974
- WUHAN UNIVERSITY OF TECHNOLOGY 926
- UNITED STATES GYPSUM COMPANY US 882
- GE (GENERAL ELECTRIC COMPANY) US 828
- MITSUBISHI MATERIALS CORPORATION JP 792
- SAUDI ARABIAN OIL COMPANY SA 686