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CPC Subgroup
G21C 3/16

Details of the construction within the casing

Full Title

Reactor fuel elements and their assemblies; Selection of substances for use as reactor fuel elements > Fuel elements > Constructional details > Details of the construction within the casing

3 direct subcodes

Child Classifications

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  • G21C 3/17 Means for storage or immobilisation of gases in fuel elements
  • G21C 3/18 Internal spacers or other non-active material within the casing, e.g. compensating for expansion of fuel rods or for compensating excess reactivity (interlayers G21C3/20)
  • G21C 3/20 with coating on fuel or on inside of casing; with non-active interlayer between casing and active material

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