G21H
Obtaining energy from radioactive sources
Official title: OBTAINING ENERGY FROM RADIOACTIVE SOURCES; APPLICATIONS OF RADIATION FROM RADIOACTIVE SOURCES, NOT OTHERWISE PROVIDED FOR; UTILISING COSMIC RADIATION (measurement of nuclear or X-radiation G01T; fusion reactors G21B; nuclear reactors G21C; lamps in which a gas filling is excited to luminescence by external corpuscular radiation or by radioactive material structurally associated with the lamp H01J65/04, H01J65/06)
G21H (Obtaining energy from radioactive sources) appears on 450 US grants and 458 published applications in this corpus.
Search patents in G21H- Granted patents
- 450
- Published applications
- 458
- Assignees
- 273
- Inventors
- 987
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 27 | 0 |
| 1977 | 29 | 0 |
| 1978 | 10 | 0 |
| 1979 | 7 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 2 | 0 |
| 1989 | 3 | 0 |
| 1990 | 4 | 0 |
| 1991 | 3 | 0 |
| 1992 | 10 | 0 |
| 1993 | 3 | 0 |
| 1994 | 1 | 0 |
| 1995 | 4 | 0 |
| 1996 | 4 | 0 |
| 1997 | 6 | 0 |
| 1998 | 3 | 0 |
| 1999 | 3 | 0 |
| 2000 | 1 | 0 |
| 2001 | 4 | 1 |
| 2002 | 8 | 3 |
| 2003 | 2 | 4 |
| 2004 | 5 | 9 |
| 2005 | 6 | 5 |
| 2006 | 2 | 17 |
| 2007 | 5 | 5 |
| 2008 | 1 | 16 |
| 2009 | 13 | 10 |
| 2010 | 5 | 12 |
| 2011 | 8 | 17 |
| 2012 | 10 | 19 |
| 2013 | 11 | 16 |
| 2014 | 17 | 23 |
| 2015 | 15 | 19 |
| 2016 | 14 | 22 |
| 2017 | 19 | 18 |
| 2018 | 16 | 29 |
| 2019 | 21 | 23 |
| 2020 | 21 | 35 |
| 2021 | 14 | 19 |
| 2022 | 21 | 26 |
| 2023 | 25 | 33 |
| 2024 | 23 | 27 |
| 2025 | 24 | 18 |
| 2026 | 10 | 32 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Main groups
Granted patents with any code in the group
- G21H 1/00Arrangements for obtaining electrical energy from radioactive sources314
- G21H 5/00Applications of radiation from radioactive sources or arrangements therefor, not otherwise provided110
- G21H 3/00Arrangements for direct conversion of radiation energy from radioactive sources into forms34
- G21H 7/00Use of effects of cosmic radiation10
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
- Method and apparatus for treating air with alpha radioisotope ionization8 Sep 2026US 12,728,379 B2NRD Co., Ltd.
- 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.
- 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
- Alpha-Emitting Isotope Generator and Method for Producing Alpha-Emitting Isotope17 Sep 2026US 2026/0279613 A1TAG1 Inc.
- Methods of forming radioactive articles and related radioactive articles10 Sep 2026US 2026/0269096 A1Battelle Energy Alliance, LLC
- Noble Gas-Based Nuclear Voltaic Power Source Using Radioisotopes in Aerosol Form10 Sep 2026US 2026/0269097 A1Nubatt Pte. Ltd.
Most cited
By later US patents
- Biomarker generator system146US 7,476,883 B2Advanced Biomarker Technologies, LLC · 2009
- Coiled brachytherapy device109US 6,419,621 B1RadioMed Corporation · 2002
- Apparatus and method for producing radiopharmaceuticals87US 7,235,216 B2Iba Molecular North America, Inc · 2007
- Direct thermal-electric conversion for geothermal energy recovery86US 4,047,093 A1977
- Surface located isotope tracer injection apparatus78US 5,049,743 AProtechnics International, Inc. · 1991