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PCE
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CPC Main Group
G21K 5/00

Irradiation devices (discharge tubes for irradiating H01J37/00)

4 direct subcodes

Child Classifications

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  • G21K 5/02 having no beam-forming means
  • G21K 5/04 with beam-forming means
  • G21K 5/08 Holders for targets or for other objects to be irradiated
  • G21K 5/10 with provision for relative movement of beam source and object to be irradiated

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