CPC Main Group Additional Only
C02F 2103/00 Nature of the water, waste water, sewage or sludge to be treated
Filing statistics
CPC C02F 2103/00 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
23 direct subcodes
Child Classifications
Navigate with arrow keys, Enter to open
- C02F 2103/02 Non-contaminated water, e.g. for industrial water supply
- C02F 2103/06 Contaminated groundwater or leachate
- C02F 2103/08 Seawater, e.g. for desalination
- C02F 2103/10 from quarries or from mining activities
- C02F 2103/12 from the silicate or ceramic industries, e.g. waste waters from cement or glass factories
- C02F 2103/14 Paint wastes
- C02F 2103/16 from metallurgical processes, i.e. from the production, refining or treatment of metals, e.g. galvanic wastes
- C02F 2103/18 from the purification of gaseous effluents
- C02F 2103/20 from animal husbandry
- C02F 2103/22 from the processing of animals, e.g. poultry, fish, or parts thereof
- C02F 2103/26 from the processing of plants or parts thereof
- C02F 2103/30 from the textile industry
- C02F 2103/32 from the food or foodstuff industry, e.g. brewery waste waters
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