CPC Main Group
C04B 12/00 Cements not provided for in groups C04B7/00 - C04B11/00
4 direct subcodes
Child Classifications
Navigate with arrow keys, Enter to open
- C04B 12/02 Phosphate cements (in, or for, the manufacture of ceramics C04B33/00, C04B35/00)
- C04B 12/04 Alkali metal or ammonium silicate cements
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