DIFF Subgroup Additional Only
C02F 2201/46105 Details relating to the electrolytic devices
Full Title
Apparatus for treatment of water, waste water or sewage > Apparatus for electrochemical processes > Electrolysis apparatus > Details relating to the electrolytic devices
Of 8 combined children, 0 exist in both systems.
8 codes are CPC-only extensions.
Note: 8 CPC extensions are marked as secondary classification only.
Top Applicants
Top Applicants (IPC)
Class C02,2013–2023, worldwide · Source: EPO PATSTAT
- CHINESE ACADEMY OF SCIENCES 3,734
- SINOPEC (CHINA PETROCHEMICAL CORPORATION) 2,761
- MIDEA 1,938
- TONGJI UNIVERSITY 1,433
- HARBIN INSTITUTE OF TECHNOLOGY 1,380
- HOHAI UNIVERSITY 1,367
- BEIJING UNIVERSITY OF TECHNOLOGY 1,317
- CHANGZHOU UNIVERSITY 1,248
- ZHEJIANG UNIVERSITY 1,229
- SOUTH CHINA UNIVERSITY OF TECHNOLOGY 1,203
Top Applicants (CPC)
Class C02,2013–2023, worldwide · Source: EPO PATSTAT
- CHINESE ACADEMY OF SCIENCES 2,531
- SINOPEC (CHINA PETROCHEMICAL CORPORATION) 1,700
- KURITA WATER IND JP 1,287
- TONGJI UNIVERSITY 1,040
- CHANGZHOU UNIVERSITY 928
- ECOLAB US 904
- HARBIN INSTITUTE OF TECHNOLOGY 904
- BEIJING UNIVERSITY OF TECHNOLOGY 878
- HOHAI UNIVERSITY 862
- EVOQUA WATER TECHNOLOGIES US 842