CPC Main Group
C02F 11/00 Treatment of sludge; Devices therefor
9 direct subcodes
Child Classifications
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- C02F 11/02 Biological treatment
- C02F 11/06 by oxidation (incinerators for burning waste liquors, e.g. sulfite liquor from paper-making plant F23G7/04)
- C02F 11/10 by pyrolysis
- C02F 11/12 by de-watering, drying or thickening
- C02F 11/18 by thermal conditioning (by pyrolysis C02F11/10)
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