G21C 7/26
Control of nuclear reaction: by displacement of the moderator or parts thereof
Official title: by displacement of the moderator or parts thereof {by changing the moderator concentration}
G21C7/26 (Control of nuclear reaction: by displacement of the moderator or parts thereof) appears on 57 US grants and 29 published applications in this corpus.
Search patents in G21C- Granted patents
- 57
- Published applications
- 29
- Assignees
- 21
- Inventors
- 115
- Latest grant
- 4 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 14 | 0 |
| 1988 | 5 | 0 |
| 1989 | 3 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 3 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 1 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 0 | 1 |
| 2015 | 0 | 0 |
| 2016 | 2 | 1 |
| 2017 | 1 | 3 |
| 2018 | 1 | 2 |
| 2019 | 0 | 1 |
| 2020 | 3 | 0 |
| 2021 | 2 | 4 |
| 2022 | 0 | 2 |
| 2023 | 5 | 6 |
| 2024 | 3 | 2 |
| 2025 | 2 | 0 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Nuclear reactors having liquid metal alloy fuels and/or moderators4 Aug 2026US 12,700,513 B2
- Reactor control device11 Nov 2025US 12,469,611 B2Rolls-Royce Smr Limited
- Control drum controller for nuclear reactor system7 Oct 2025US 12,437,887 B2Standard Nuclear, Inc.
- Method for replacing nuclear reactor core19 Nov 2024US 12,148,539 B2Radiant Industries, Incorporated
- Method and apparatus for real-time learning-based augmented irradiation control and optimization1 Oct 2024US 12,106,865 B2Oregon State University
- Temperature activated passive shutdown device for a nuclear reactor16 Jul 2026US 2026/0204443 A1Moltex Energy Ltd
- Nuclear reactor system with lift-out core assembly30 Apr 2026US 2026/0120900 A1Radiant Industries, Incorporated
- Nuclear Reactor and Operation Method for Nuclear Reactor19 Sep 2024US 2024/0312649 A1Kabushiki Kaisha Toshiba
- Automated In-Vessel Neutron Flux Detector System Embedded in Control Drum Assembly8 Aug 2024US 2024/0266085 A1Westinghouse Electric Corp.
- Closed-vessel molten salt fission reactor21 Dec 2023US 2023/0411025 A1Bk Clean Energy LLC
Most cited
By later US patents
- Underground nuclear power station using self-regulating heat-pipe controlled reactors98US 4,851,183 AThe United States of America as represented by the United States Department of Energy · 1989
- Liquid affected spectral shift reactor31US 5,185,120 AGeneral Electric Company · 1993
- Displacer rod for use in a mechanical spectral shift reactor26US 4,432,934 AWestinghouse Electric Corp. · 1984
- Undermoderated nuclear reactor26US 4,921,282 AFasTest, Inc. · 1990
- Neutron reflector assembly for dynamic spectrum shifting22US 10,734,122 B2TerraPower, LLC · 2020