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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

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