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IPC Main Group
G21C 15/00

Cooling arrangements within the pressure vessel containing the core; Selection of specific coolants

Introduced: September 1968

Last revised: January 2006

Classification Context

Section:
PHYSICS
Class:
NUCLEAR PHYSICS; NUCLEAR ENGINEERING
Subclass:
NUCLEAR REACTORS

Related Keywords

COOLING of nuclear reactors

7 direct subcodes

Child Classifications

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  • G21C 15/16 comprising means for separating liquid and steam
  • G21C 15/18 Emergency cooling arrangements; Removing shut-down heat
  • G21C 15/2 Partitions or thermal insulation between fuel channel and moderator, e.g. in pressure tube reactors
  • G21C 15/22 Structural association of coolant tubes with headers or other pipes, e.g. in pressure tube reactors
  • G21C 15/28 Selection of specific coolants

Top Applicants

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

  1. CHINA GENERAL NUCLEAR POWER CORPORATION 2,364
  2. CGN POWER COMPANY 1,899
  3. CHINA NUCLEAR POWER ENGINEERING COMPANY 1,870
  4. NUCLEAR POWER INSTITUTE OF CHINA 1,517
  5. KOREA ATOMIC ENERGY RESEARCH INSTITUTE KR 1,367
  6. WESTINGHOUSE ELECTRIC CORPORATION US 1,295
  7. KOREA HYDRO & NUCLEAR POWER COMPANY KR 1,196
  8. CHINESE ACADEMY OF SCIENCES 1,044
  9. CHINA INSTITUTE OF ATOMIC ENERGY 1,011
  10. HITACHI-GE NUCLEAR ENERGY 955