CPC Subgroup
C04B 7/147 Metallurgical slag
Full Title
Hydraulic cements (calcium sulfate cements C04B11/00) > Cements containing slag (slags from waste incineration C04B7/28) > Metallurgical slag
1 direct subcode
Child Classifications
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- C04B 7/153 Mixtures thereof with other inorganic cementitious materials or other activators
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