CPC Subgroup
G21D 3/04 Safety arrangements (emergency protection of reactor G21C9/00)
Full Title
Control of nuclear power plant (control of nuclear reaction in general G21C7/00) > Safety arrangements (emergency protection of reactor G21C9/00)
1 direct subcode
Child Classifications
Navigate with arrow keys, Enter to open
- G21D 3/06 responsive to faults within the plant (in the reactor G21C9/00)
Top Applicants
Top 10 applicants by patent filingsfor class G21, 2013–2023, worldwide · Source: EPO PATSTAT
- CHINA GENERAL NUCLEAR POWER CORPORATION 1,383
- WESTINGHOUSE ELECTRIC CORPORATION US 1,347
- KOREA ATOMIC ENERGY RESEARCH INSTITUTE KR 1,303
- CGN POWER COMPANY 1,156
- CHINA NUCLEAR POWER ENGINEERING COMPANY 1,149
- KOREA HYDRO & NUCLEAR POWER COMPANY KR 1,146
- NUCLEAR POWER INSTITUTE OF CHINA 1,086
- CHINESE ACADEMY OF SCIENCES 765
- CEA (COMMISSARIAT A L'ENERGIE ATOMIQUE) FR 763
- CHINA INSTITUTE OF ATOMIC ENERGY 659