IPC Subgroup
G21C 19/3 with continuous purification of circulating fluent material, e.g. by extraction of fission products
Introduced: September 1968
Last revised: January 2006
Full Title
Arrangements for treating, for handling, or for facilitating the handling of, fuel or other materials which are used within the reactor, e.g. within its pressure vessel > Arrangements for introducing fluent material into the reactor core; Arrangements for removing fluent material from the reactor core > with continuous purification of circulating fluent material, e.g. by extraction of fission products
Classification Context
- Section:
- PHYSICS
- Class:
- NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- Subclass:
- NUCLEAR REACTORS
3 direct subcodes
Child Classifications
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- G21C 19/303 specially adapted for gases
- G21C 19/307 specially adapted for liquids
- G21C 19/317 Recombination devices for radiolytic dissociation products
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