IPC Main Group
G21C 3/00 Reactor fuel elements or their assemblies; Selection of substances for use as reactor fuel elements
Introduced: September 1968
Last revised: January 2006
Classification Context
- Section:
- PHYSICS
- Class:
- NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- Subclass:
- NUCLEAR REACTORS
Related Keywords
CANNING of nuclear fuelCASING(S) for fuel elements of nuclear reactorsnuclear FUEL(S) elements for reactors
5 direct subcodes
Child Classifications
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- G21C 3/02 Fuel elements
- G21C 3/3 Assemblies of a number of fuel elements in the form of a rigid unit
- G21C 3/38 Fuel units consisting of a single fuel element in a supporting sleeve
- G21C 3/4 Structural combination of fuel element with thermoelectric element for direct production of electric energy from fission heat
- G21C 3/42 Selection of substances for use as reactor fuel
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