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 15/02 Arrangement or disposition of passages in which heat is transferred to the coolant, e.g. for coolant circulation through the supports of the fuel elements
- 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 15/24 Promoting flow of the coolant
- G21C 15/28 Selection of specific coolants
Top Applicants
Top 10 applicants by patent filingsfor class G21, 2013–2023, worldwide · Source: EPO PATSTAT
- CHINA GENERAL NUCLEAR POWER CORPORATION 2,364
- CGN POWER COMPANY 1,899
- CHINA NUCLEAR POWER ENGINEERING COMPANY 1,870
- NUCLEAR POWER INSTITUTE OF CHINA 1,517
- KOREA ATOMIC ENERGY RESEARCH INSTITUTE KR 1,367
- WESTINGHOUSE ELECTRIC CORPORATION US 1,295
- KOREA HYDRO & NUCLEAR POWER COMPANY KR 1,196
- CHINESE ACADEMY OF SCIENCES 1,044
- CHINA INSTITUTE OF ATOMIC ENERGY 1,011
- HITACHI-GE NUCLEAR ENERGY 955