G21H 1/00
Arrangements for obtaining electrical energy from radioactive sources
Official title: Arrangements for obtaining electrical energy from radioactive sources, e.g. from radioactive isotopes {, nuclear or atomic batteries}
G21H1/00 (Arrangements for obtaining electrical energy from radioactive sources) appears on 314 US grants and 315 published applications in this corpus.
Search patents in G21H- Granted patents
- 314
- Published applications
- 315
- Assignees
- 171
- Inventors
- 618
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 19 | 0 |
| 1977 | 15 | 0 |
| 1978 | 4 | 0 |
| 1979 | 3 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 8 | 0 |
| 1993 | 3 | 0 |
| 1994 | 1 | 0 |
| 1995 | 3 | 0 |
| 1996 | 3 | 0 |
| 1997 | 6 | 0 |
| 1998 | 3 | 0 |
| 1999 | 3 | 0 |
| 2000 | 1 | 0 |
| 2001 | 3 | 1 |
| 2002 | 6 | 2 |
| 2003 | 1 | 3 |
| 2004 | 4 | 6 |
| 2005 | 6 | 3 |
| 2006 | 1 | 12 |
| 2007 | 2 | 3 |
| 2008 | 1 | 9 |
| 2009 | 8 | 2 |
| 2010 | 3 | 5 |
| 2011 | 6 | 13 |
| 2012 | 7 | 12 |
| 2013 | 5 | 12 |
| 2014 | 12 | 15 |
| 2015 | 9 | 11 |
| 2016 | 10 | 17 |
| 2017 | 12 | 13 |
| 2018 | 13 | 19 |
| 2019 | 14 | 13 |
| 2020 | 14 | 20 |
| 2021 | 11 | 15 |
| 2022 | 17 | 25 |
| 2023 | 20 | 24 |
| 2024 | 17 | 18 |
| 2025 | 19 | 14 |
| 2026 | 9 | 28 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- G21H 1/06Cells wherein radiation is applied to the junction of different semiconductor materials110
- G21H 1/10Cells in which radiation heats a thermoelectric junction or a thermionic converter80
- G21H 1/02Cells charged directly by beta radiation53
- G21H 1/12Cells using conversion of the radiation into light combined with subsequent photoelectric49
- G21H 1/04Cells using secondary emission induced by alpha radiation, beta radiation, or gamma48
- G21H 1/08Cells in which radiation ionises a gas in the presence of a3
Recent patents
- Semiconductor betavoltaic batteries with p-n diodes15 Sep 2026US 12,738,389 B2The Government of the United States of America, as represented by the Secretary of the Navy
- Photovoltaic power generation systems and methods regarding same8 Sep 2026US 12,732,131 B2Brilliant Light Power, Inc.
- Semiconductor betavoltaic battery with integrated beta emitter1 Sep 2026US 12,725,717 B2The Government of the United States of America, as represented by the Secretary of the Navy
- Devices, systems, and methods for power generation using irradiators and other gamma ray sources16 Jun 2026US 12,658,336 B2Westinghouse Electric Corp.
- Radioisotope power system for vehicle19 May 2026US 12,633,429 B2Standard Nuclear, Inc.
- Vehicle system with permanent power source1 Oct 2026US 2026/0296340 A1Robert Bosch GmbH
- Carbon electrode for dye-sensitized betavoltaic batteries, betavoltaic battery including the same, and method of manufacturing the same24 Sep 2026US 2026/0290818 A1Daegu Gyeongbuk Institute of Science and Technology
- Noble Gas-Based Nuclear Voltaic Power Source Using Radioisotopes in Aerosol Form10 Sep 2026US 2026/0269097 A1Nubatt Pte. Ltd.
- Modular nuclear battery and nuclear cell system27 Aug 2026US 2026/0253759 A1Terminus Pesquisa E Desenvolvimento Em Energia LTDA
- Isotope Battery and Method of Fabricating the Same6 Aug 2026US 2026/0231568 A1LG Energy Solution, Ltd.
Most cited
By later US patents
- Direct thermal-electric conversion for geothermal energy recovery86US 4,047,093 A1977
- Radioisotope-powered semiconductor battery75US 5,859,484 AOntario Hydro · 1999
- Adjustable-output electrical energy source using light-emitting polymer74US 5,235,232 AE. F. Johnson Company · 1993
- Method and apparatus for thermionic generator69US 5,994,638 ABorealis Technical Limited · 1999
- Direct charge radioisotope activation and power generation68US 6,479,920 B1Wisconsin Alumni Research Foundation · 2002