CPC Subgroup Additional Only
C04B 2235/78 Grain sizes and shapes, product microstructures, e.g. acicular grains, equiaxed grains, platelet-structures
Full Title
Aspects relating to ceramic starting mixtures or sintered ceramic products > Aspects relating to sintered or melt-casted ceramic products > Physical characteristics > Grain sizes and shapes, product microstructures, e.g. acicular grains, equiaxed grains, platelet-structures
6 direct subcodes
Child Classifications
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- C04B 2235/781 Nanograined materials, i.e. having grain sizes below 100 nm
- C04B 2235/782 Grain size distributions
- C04B 2235/785 Submicron sized grains, i.e. from 0,1 to 1 micron
- C04B 2235/786 Micrometer sized grains, i.e. from 1 to 100 micron
- C04B 2235/787 Oriented grains
- C04B 2235/788 Aspect ratio of the grains
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