CPC Subgroup Additional Only
C04B 2237/04 Ceramic interlayers
Full Title
Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating > Aspects relating to interlayers, e.g. used to join ceramic articles with other articles by heating > Ceramic interlayers
3 direct subcodes
Child Classifications
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- C04B 2237/06 Oxidic interlayers
- C04B 2237/08 Non-oxidic interlayers
- C04B 2237/09 wherein the active component for bonding is not the largest fraction of the interlayer
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