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IPC Main Group
C02F 103/00

Nature of the water, waste water, sewage or sludge to be treated

Introduced: January 2000

Last revised: January 2006

Classification Context

Section:
CHEMISTRY; METALLURGY
Class:
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Subclass:
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

Filing statistics

IPC C02F 103/00 belongs to the parent subclass C02F, which recorded 678,287 patent applications worldwide between 2013 and 2023. Annual filings grew from 28,734 in 2013 to 70,835 in 2023 (+147%), peaking at 91,737 applications in 2020. The most active applicants in class C02 are CHINESE ACADEMY OF SCIENCES (3,734 applications), SINOPEC (CHINA PETROCHEMICAL CORPORATION) (2,761 applications) and MIDEA (1,938 applications).

Source: EPO PATSTAT, worldwide filings

16 direct subcodes

Child Classifications

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  • C02F 103/06 Contaminated groundwater or leachate
  • C02F 103/08 Seawater, e.g. for desalination
  • C02F 103/1 from quarries or from mining activities
  • C02F 103/12 from the silicate or ceramic industries, e.g. waste waters from cement or glass factories
  • C02F 103/14 Paint wastes
  • C02F 103/16 from metallurgical processes, i.e. from the production, refining or treatment of metals, e.g. galvanic wastes
  • C02F 103/18 from the wet purification of gaseous effluents
  • C02F 103/2 from animal husbandry
  • C02F 103/3 from the textile industry
  • C02F 103/32 from the food or foodstuff industry, e.g. brewery waste waters
  • C02F 103/42 from bathing facilities, e.g. swimming pools
  • C02F 103/44 from vehicle washing facilities

Top Applicants

Top 10 applicants by patent filingsfor class C02, 2013–2023, worldwide · Source: EPO PATSTAT

  1. CHINESE ACADEMY OF SCIENCES 3,734
  2. SINOPEC (CHINA PETROCHEMICAL CORPORATION) 2,761
  3. MIDEA 1,938
  4. TONGJI UNIVERSITY 1,433
  5. HARBIN INSTITUTE OF TECHNOLOGY 1,380
  6. HOHAI UNIVERSITY 1,367
  7. BEIJING UNIVERSITY OF TECHNOLOGY 1,317
  8. CHANGZHOU UNIVERSITY 1,248
  9. ZHEJIANG UNIVERSITY 1,229
  10. SOUTH CHINA UNIVERSITY OF TECHNOLOGY 1,203