CPC Main Group
G21J 3/00 Peaceful applications of nuclear explosive devices
Filing statistics
CPC G21J 3/00 belongs to the parent subclass G21J, which recorded 43 patent applications worldwide between 2013 and 2023. Annual filings declined from 3 in 2014 to 2 in 2023 (-33%), peaking at 7 applications in 2016. 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
1 direct subcode
Child Classifications
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- G21J 3/02 for excavation
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