CPC Main Group Additional Only
C04B 2111/00 Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
25 direct subcodes
Child Classifications
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- C04B 2111/10 Compositions or ingredients thereof characterised by the absence or the very low content of a specific material
- C04B 2111/20 Resistance against chemical, physical or biological attack
- C04B 2111/30 Nailable or sawable materials
- C04B 2111/32 Expansion-inhibited materials
- C04B 2111/34 Non-shrinking or non-cracking materials
- C04B 2111/40 Porous or lightweight materials
- C04B 2111/50 Flexible or elastic materials
- C04B 2111/52 Sound-insulating materials
- C04B 2111/54 Substitutes for natural stone, artistic materials or the like
- C04B 2111/56 Compositions suited for fabrication of pipes, e.g. by centrifugal casting, or for coating concrete pipes
- C04B 2111/60 Flooring materials
- C04B 2111/70 Grouts, e.g. injection mixtures for cables for prestressed concrete
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