DIFF Main Group
C04B 9/00 Magnesium cements or similar cements
Introduced: September 1968
Title
Titles differ between systems:
IPC: Magnesium cements or silimar cements
CPC: Magnesium cements or similar cements
Full Title
Full titles differ between systems:
IPC:
Magnesium cements or silimar cements
CPC:
Magnesium cements or similar cements
IPC and CPC are identically structured here. All 5 subcodes exist in both systems.
2 shared codes have differing titles between IPC and CPC.
Child Classifications
Navigate with arrow keys, Enter to open
- C04B 9/02 Magnesium cements containing chlorides, e.g. Sorel cement IPC+CPC Available in IPC and CPC
- C04B 9/04 Magnesium cements containing sulfates, nitrates, phosphates or fluorides IPC+CPC Available in IPC and CPC
- C04B 9/06 Cements containing metal compounds other than magnesium compounds, e.g. compounds of zinc or lead IPC+CPC Available in IPC and CPC
- C04B 9/11 Mixtures thereof with other inorganic cementitious materials since 1985 IPC+CPC Available in IPC and CPC
- C04B 9/20 Manufacture, e.g. preparing the batches (preheating, burning, calcining or cooling lime stone, magnesite or dolomite C04B2/10) IPC+CPC Available in IPC and CPC
Top Applicants
Top Applicants (IPC)
Class C04,2013–2023, worldwide · Source: EPO PATSTAT
- CHINESE ACADEMY OF SCIENCES 2,095
- WUHAN UNIVERSITY OF TECHNOLOGY 1,205
- NGK INSULATORS JP 1,133
- HALLIBURTON ENERGY SERVICES GROUP US 1,049
- SIKA TECHNOLOGY CH 1,041
- GUILIN UNIVERSITY OF TECHNOLOGY 807
- WUHAN UNIVERSITY OF SCIENCE AND TECHNOLOGY 806
- SOUTHEAST UNIVERSITY 801
- CORNING US 777
- UNITED STATES GYPSUM COMPANY US 739
Top Applicants (CPC)
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