CPC Main Group
G21C 15/00 Cooling arrangements within the pressure vessel containing the core; Selection of specific coolants
Filing statistics
CPC G21C 15/00 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 15/02 Arrangements or disposition of passages in which heat is transferred to the coolant;
- G21C 15/16 comprising means for separating liquid and steam (separating in general B01D; steam traps F16D)
- G21C 15/18 Emergency cooling arrangements; Removing shut-down heat
- G21C 15/20 Partitions or thermal insulation between fuel channel and moderator
- G21C 15/22 Structural association of coolant tubes with headers (joints of tubes in general F16L)
- G21C 15/24 Promoting flow of the coolant (electrodynamic pumps H02K44/02)
- G21C 15/28 Selection of specific coolants (if serving as the moderator G21C5/12; compositions per se C09K5/00; );
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