CPC Subgroup Additional Only
C04B 2235/76 Crystal structural characteristics, e.g. symmetry
Full Title
Aspects relating to ceramic starting mixtures or sintered ceramic products > Aspects relating to sintered or melt-casted ceramic products > Physical characteristics > Crystal structural characteristics, e.g. symmetry
6 direct subcodes
Child Classifications
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- C04B 2235/761 Unit-cell parameters, e.g. lattice constants
- C04B 2235/762 Cubic symmetry, e.g. beta-SiC
- C04B 2235/765 Tetragonal symmetry
- C04B 2235/766 Trigonal symmetry, e.g. alpha-Si3N4 or alpha-Sialon
- C04B 2235/767 Hexagonal symmetry, e.g. beta-Si3N4, beta-Sialon, alpha-SiC or hexa-ferrites
- C04B 2235/768 Perovskite structure ABO3
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