CPC Main Group Additional Only
C02F 2201/00 Apparatus for treatment of water, waste water or sewage
8 direct subcodes
Child Classifications
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- C02F 2201/001 Build in apparatus for autonomous on board water supply and wastewater treatment (e.g. for aircrafts, cruiseships, oil drilling platforms, railway trains, space stations)
- C02F 2201/002 Construction details of the apparatus
- C02F 2201/008 Mobile apparatus and plants, e.g. mounted on a vehicle
- C02F 2201/009 Apparatus with independent power supply, e.g. solar cells, windpower or fuel cells
- C02F 2201/32 Details relating to UV-irradiation devices
- C02F 2201/46 Apparatus for electrochemical processes
- C02F 2201/48 Devices for applying magnetic or electric fields
- C02F 2201/78 Details relating to ozone treatment devices
Top Applicants
Top 10 applicants by patent filingsfor 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