CPC Subgroup Additional Only
C04B 2235/48 Organic compounds becoming part of a ceramic after heat treatment, e.g. carbonising phenol resins
Full Title
Aspects relating to ceramic starting mixtures or sintered ceramic products > Composition of constituents of the starting material or of secondary phases of the final product > Constituents and secondary phases not being of a fibrous nature > Organic compounds becoming part of a ceramic after heat treatment, e.g. carbonising phenol resins
2 direct subcodes
Child Classifications
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- C04B 2235/483 Si-containing organic compounds, e.g. silicone resins, (poly)silanes, (poly)siloxanes or (poly)silazanes
- C04B 2235/486 Boron containing organic compounds, e.g. borazine, borane or boranyl
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