G21C 5/12
Moderator or core structure: characterised by composition
Official title: characterised by composition, e.g. the moderator containing additional substances which ensure improved heat resistance of the moderator {(purification of fluid moderators during the operation of the reactor G21C19/30)}
G21C5/12 (Moderator or core structure: characterised by composition) appears on 65 US grants and 100 published applications in this corpus.
Search patents in G21C- Granted patents
- 65
- Published applications
- 100
- Assignees
- 63
- Inventors
- 200
- Latest grant
- 4 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 2 |
| 2010 | 0 | 2 |
| 2011 | 1 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 2 |
| 2014 | 0 | 1 |
| 2015 | 0 | 6 |
| 2016 | 0 | 6 |
| 2017 | 0 | 8 |
| 2018 | 4 | 8 |
| 2019 | 8 | 4 |
| 2020 | 8 | 7 |
| 2021 | 11 | 8 |
| 2022 | 6 | 15 |
| 2023 | 6 | 11 |
| 2024 | 4 | 8 |
| 2025 | 5 | 4 |
| 2026 | 4 | 7 |
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
- Devices, systems, and methods for configuring the layout of unit cell of a reactor core28 Jul 2026US 12,694,996 B2Westinghouse Electric Corp.
- Carbide-based fuel assembly for thermal propulsion applications20 Jan 2026US 12,531,166 B2BWXT Nuclear Energy, Inc.
- Nuclear reactor core having outer portion coolant passages of larger diameter than inner portion coolant passages13 Jan 2026US 12,525,365 B2Standard Nuclear, Inc.
- Nuclear reactor core architecture with moderator elements inside insulator elements7 Oct 2025US 12,437,888 B2Loki Mmr Inc.
- Calandria nuclear core assembly and method of assembling a nuclear moderator core system20 Aug 2026US 2026/0245752 A1Terrestrial Energy Inc.
- Small moderated nuclear reactors9 Jul 2026US 2026/0196368 A1Triad National Security, LLC
- Polymer-based aqueous homogeneous reactor4 Jun 2026US 2026/0155268 A1Cal Thermo, LLC
- Reactor control and shutdown systems28 May 2026US 2026/0148869 A1Nano Nuclear Energy Inc.
- Nuclear reactor core architecture with enhanced heat transfer and safety9 Apr 2026US 2026/0100291 A1Loki Mmr Inc.
Most cited
By later US patents
- BWR fuel assembly having oxide and hydride fuel32US 5,349,618 A1994
- Nuclear reactor configured to have molten fuel pass through plural heat exchangers before returning to core31US 10,497,479 B2TerraPower, LLC · 2019
- Nuclear propulsion rocket21US 5,410,578 AThe Babcock & Wilcox Company · 1995
- Molten salt nuclear reactor19US 9,881,700 B2Ottawa Valley Research Associates Ltd. · 2018
- Moderator material for neutrons and use of said material18US 5,703,918 ARadtek Corporation · 1997