G21J
Nuclear explosives
Official title: NUCLEAR EXPLOSIVES; APPLICATIONS THEREOF (electric or magnetic analogue computers, e.g. simulators, for nuclear physics G06G7/54)
G21J (Nuclear explosives) appears on 24 US grants and 18 published applications in this corpus.
Search patents in G21J- Granted patents
- 24
- Published applications
- 18
- Assignees
- 15
- Inventors
- 53
- Latest grant
- 18 Mar 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 2 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 1 |
| 2002 | 0 | 2 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 1 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 0 |
| 2011 | 0 | 2 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 1 | 1 |
| 2017 | 1 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 4 |
| 2020 | 3 | 1 |
| 2021 | 0 | 1 |
| 2022 | 1 | 1 |
| 2023 | 0 | 1 |
| 2024 | 0 | 0 |
| 2025 | 3 | 0 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Main groups
Granted patents with any code in the group
Recent patents
- Apparatus for detection of electrical disturbances resulting from electromagnetic pulse18 Mar 2025US 12,253,552 B2Faraday Defense Corporation
- Secondary explosive11 Feb 2025US 12,221,401 B2
- Infrasound detector with force transducer for negative feedback or calibration14 Jan 2025US 12,196,602 B2Gaiacode LTD
- Surge protection apparatus15 Feb 2022US 11,251,609 B2Electronics and Telecommunications Research Institute
- Asteroid redirection and soft landing facilitated by cosmic ray and muon-catalyzed fusion27 Oct 2020US 10,815,015 B2
- Mobile vehicle control system and method1 Oct 2026US 2026/0302760 A1Korea Atomic Energy Research Institute
- Infrasound Sensors for Large Arrays16 Jul 2026US 2026/0202239 A1TDA Research, Inc.
- Apparatus for detection of electrical disturbances resulting from electromagnetic pulse21 Sep 2023US 2023/0296657 A1Faraday Defense Corporation
- Infrasound detector24 Mar 2022US 2022/0090957 A1Gaiacode LTD
- Secondary explosive4 Nov 2021US 2021/0343430 A1
Most cited
By later US patents
- Nuclear event detector31US 4,687,622 AIRT Corporation · 1987
- Monitoring system and method for nuclear weapons effects detection and damage assessment15US 4,827,414 A1989
- Compact intense radiation system13US 5,835,545 AThe United States of America as represented by the Secretary of the Air Force · 1998
- Lithium niobate explosion monitor10US 4,893,049 AThe United States of America as represented by the United States Department of Energy · 1990
- Sensor for electromagnetic waves caused by nuclear detonation9US 4,219,804 AGeneral Electric Company · 1980