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IPC Subgroup
G21C 1/16

moderator and coolant being different or separated, e.g. sodium-graphite reactor

Introduced: September 1968

Last revised: January 2006

Full Title

Reactor types > Thermal reactors > Heterogeneous reactors, i.e. in which fuel and moderator are separated > moderator being substantially not pressurised, e.g. swimming-pool reactor > moderator and coolant being different or separated, e.g. sodium-graphite reactor

Classification Context

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

1 direct subcode

Child Classifications

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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