Apparatus for treatment of water, waste water or sewage

Filing statistics

CPC C02F 2201/00 belongs to the parent subclass C02F, which recorded 316,465 patent applications worldwide between 2013 and 2023. Annual filings grew from 12,795 in 2013 to 28,600 in 2023 (+124%), peaking at 39,882 applications in 2018. The most active applicants in class C02 are CHINESE ACADEMY OF SCIENCES (2,531 applications), SINOPEC (CHINA PETROCHEMICAL CORPORATION) (1,700 applications) and KURITA WATER IND (1,287 applications).

Source: EPO PATSTAT, worldwide filings

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