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CPC Subgroup
G21F 1/02

Selection of uniform shielding materials

Full Title

Shielding characterised by the composition of the materials > Selection of uniform shielding materials

Filing statistics

CPC G21F 1/02 belongs to the parent subclass G21F, which recorded 16,152 patent applications worldwide between 2013 and 2023. Annual filings grew from 1,286 in 2013 to 1,355 in 2023 (+5%), peaking at 1,657 applications in 2020. The most active applicants in class G21 are CHINA GENERAL NUCLEAR POWER CORPORATION (1,383 applications), WESTINGHOUSE ELECTRIC CORPORATION (1,347 applications) and KOREA ATOMIC ENERGY RESEARCH INSTITUTE (1,303 applications).

Source: EPO PATSTAT, worldwide filings

6 direct subcodes

Child Classifications

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  • G21F 1/023
  • G21F 1/026
  • G21F 1/06 Ceramics; Glasses; Refractories (cermets G21F1/08)

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