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
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.
28 direct subcodes
Child Classifications
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- C04B 11/00 Calcium sulfate cements
- C04B 12/00 Cements not provided for in groups C04B7/00 - C04B11/00
- 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)
- 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
- 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
- C04B 2/00 Lime, magnesia or dolomite (hydraulic lime cements C04B7/34)
- 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
- C04B 2103/00 Function or property of ingredients for mortars, concrete or artificial stone
- C04B 2111/00 Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B 22/00 Use of inorganic materials as active ingredients for mortars, concrete or artificial stone, e.g. accelerators
- C04B 2201/00 Mortars, concrete or artificial stone characterised by specific physical values
- C04B 2235/00 Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B 2237/00 Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
- C04B 2290/00 Organisational aspects of production methods, equipment or plants
- C04B 24/00 Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B 26/00 Compositions of mortars, concrete or artificial stone, containing only organic binders
- 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
- C04B 30/00 Compositions for artificial stone, not containing binders
- C04B 32/00 Artificial stone not provided for in other groups of this subclass
- C04B 33/00 Clay-wares (monolithic refractories or refractory mortars C04B35/66; porous products C04B38/00)
Top Applicants
Top 10 applicants by patent filingsfor 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