CPC Subgroup
G21C 17/02 Devices or arrangements for monitoring coolant or moderator
Full Title
Monitoring; Testing (measuring in general G01); > Devices or arrangements for monitoring coolant or moderator
Filing statistics
CPC G21C 17/02 belongs to the parent subclass G21C, which recorded 23,858 patent applications worldwide between 2013 and 2023. Annual filings grew from 2,031 in 2013 to 2,125 in 2023 (+5%), peaking at 2,595 applications in 2021. The most active applicants in class G21 are CHINA GENERAL NUCLEAR POWER CORPORATION (1,383 applications), WESTINGHOUSE ELECTRIC CORPORATION (1,347 applications) and KOREA ATOMIC ENERGY RESEARCH INSTITUTE (1,303 applications).
Source: EPO PATSTAT, worldwide filings
7 direct subcodes
Child Classifications
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- G21C 17/022 for monitoring liquid coolants or moderators
- G21C 17/028 for monitoring gaseous coolants
- G21C 17/032 Reactor-coolant flow measuring or monitoring
- G21C 17/035 Moderator- or coolant-level detecting devices
- G21C 17/038 Boiling detection in moderator or coolant
- G21C 17/04 Detecting burst slugs
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