DIFF Subgroup
G21C 17/02 Devices or arrangements for monitoring coolant or moderator
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Monitoring; Testing > Devices or arrangements for monitoring coolant or moderator
CPC:
Monitoring; Testing (measuring in general G01); > Devices or arrangements for monitoring coolant or moderator
Of 7 combined children, 6 exist in both systems.
1 codes are CPC-only extensions.
Child Classifications
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- G21C 17/022 for monitoring liquid coolants or moderators since 1990 +1 CPC IPC+CPC Available in IPC and CPC
- G21C 17/032 Reactor-coolant flow measuring or monitoring since 1990 IPC+CPC Available in IPC and CPC
- G21C 17/035 Moderator- or coolant-level detecting devices since 1990 IPC+CPC Available in IPC and CPC
Top Applicants
Top Applicants (IPC)
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
Top Applicants (CPC)
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