CPC Main Group
G21H 1/00 Arrangements for obtaining electrical energy from radioactive sources, e.g. from radioactive isotopes
6 direct subcodes
Child Classifications
Navigate with arrow keys, Enter to open
- G21H 1/02 Cells charged directly by beta radiation
- G21H 1/04 Cells using secondary emission induced by alpha radiation, beta radiation, or gamma radiation
- G21H 1/06 Cells wherein radiation is applied to the junction of different semiconductor materials
- G21H 1/08 Cells in which radiation ionises a gas in the presence of a junction of two dissimilar metals, i.e. contact potential difference cells
- G21H 1/10 Cells in which radiation heats a thermoelectric junction or a thermionic converter
- G21H 1/12 Cells using conversion of the radiation into light combined with subsequent photoelectric conversion into electric energy
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