G21C 1/02
Fast fission reactors, i.e. reactors not using a moderator
Official title: Fast fission reactors, i.e. reactors not using a moderator {; Metal cooled reactors; Fast breeders}
G21C1/02 (Fast fission reactors, i.e. reactors not using a moderator) appears on 351 US grants and 353 published applications in this corpus.
Search patents in G21C- Granted patents
- 351
- Published applications
- 353
- Assignees
- 135
- Inventors
- 722
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 7 | 0 |
| 1977 | 16 | 0 |
| 1978 | 9 | 0 |
| 1979 | 5 | 0 |
| 1980 | 3 | 0 |
| 1981 | 8 | 0 |
| 1982 | 14 | 0 |
| 1983 | 5 | 0 |
| 1984 | 3 | 0 |
| 1985 | 8 | 0 |
| 1986 | 5 | 0 |
| 1987 | 13 | 0 |
| 1988 | 12 | 0 |
| 1989 | 5 | 0 |
| 1990 | 4 | 0 |
| 1991 | 7 | 0 |
| 1992 | 2 | 0 |
| 1993 | 6 | 0 |
| 1994 | 2 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 3 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 2 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 1 | 1 |
| 2006 | 1 | 3 |
| 2007 | 0 | 1 |
| 2008 | 0 | 8 |
| 2009 | 1 | 14 |
| 2010 | 1 | 28 |
| 2011 | 3 | 30 |
| 2012 | 4 | 14 |
| 2013 | 7 | 10 |
| 2014 | 9 | 13 |
| 2015 | 12 | 8 |
| 2016 | 15 | 27 |
| 2017 | 29 | 25 |
| 2018 | 14 | 16 |
| 2019 | 13 | 19 |
| 2020 | 18 | 22 |
| 2021 | 22 | 11 |
| 2022 | 13 | 23 |
| 2023 | 13 | 19 |
| 2024 | 10 | 22 |
| 2025 | 11 | 20 |
| 2026 | 10 | 17 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Separation of fission products in a molten salt reactor via adsorbent frameworks11 Aug 2026US 12,706,225 B2Abilene Christian University
- Fuel element with multi-smear density fuel4 Aug 2026US 12,700,514 B2TerraPower, LLC
- Fuel assembly having a shared fission gas plenum16 Jun 2026US 12,658,330 B2Westinghouse Electric Corp.
- Reactor systems having an external fuel salt loop26 May 2026US 12,640,277 B2TerraPower, LLC
- Fast nuclear reactor core having a gas expansion module21 Apr 2026US 12,609,208 B2Hitachi GE Vernova Nuclear Energy, Ltd.
- Sodium cooled fast reactor mechanical hold down and discrimination system1 Oct 2026US 2026/0301978 A1TerraPower, LLC
- Molten fuel reactor thermal management configurations24 Sep 2026US 2026/0290630 A1c/o TerraPower, LLC
- Molten salt reactor and molten salt reactor system17 Sep 2026US 2026/0279605 A1Iucf-Hyu (Industry-University Cooperation Foundation Hanyang
- High temperature heat pumps10 Sep 2026US 2026/0266563 A1TerraPower, LLC
- Cooled headspace utilizing nitrogen-to-nitrogen heat exchanger10 Sep 2026US 2026/0269093 A1Natura Resources LLC
Most cited
By later US patents
- Passive cooling system for liquid metal cooled nuclear reactors with backup coolant flow path56US 5,223,210 AGeneral Electric Company · 1993
- Fission reaction control in a molten salt reactor43US 10,438,705 B2TerraPower, LLC · 2019
- Molten fuel-salt reactor42US 4,045,286 AElectricite de France (Service National) · 1977
- Passive heat transfer means for nuclear reactors42US 4,478,784 AThe United States of America as represented by the United States Department of Energy · 1984
- Transuranium elements transmuting fuel assembly40US 5,400,375 AKabushiki Kaisha Toshiba · 1995