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PCE
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CPC Subgroup
G21F 9/20

Disposal of liquid waste

Full Title

Treating radioactively contaminated material; Decontamination arrangements therefor > Treating liquids > Disposal of liquid waste

3 direct subcodes

Child Classifications

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  • G21F 9/22 by storage in a tank or other container
  • G21F 9/24 by storage in the ground; by storage under water, e.g. in ocean
  • G21F 9/26 by dilution in water, e.g. in ocean, in stream

Top Applicants

Top 10 applicants by patent filingsfor class G21, 2013–2023, worldwide · Source: EPO PATSTAT

  1. CHINA GENERAL NUCLEAR POWER CORPORATION 1,383
  2. WESTINGHOUSE ELECTRIC CORPORATION US 1,347
  3. KOREA ATOMIC ENERGY RESEARCH INSTITUTE KR 1,303
  4. CGN POWER COMPANY 1,156
  5. CHINA NUCLEAR POWER ENGINEERING COMPANY 1,149
  6. KOREA HYDRO & NUCLEAR POWER COMPANY KR 1,146
  7. NUCLEAR POWER INSTITUTE OF CHINA 1,086
  8. CHINESE ACADEMY OF SCIENCES 765
  9. CEA (COMMISSARIAT A L'ENERGIE ATOMIQUE) FR 763
  10. CHINA INSTITUTE OF ATOMIC ENERGY 659