G21C 5/00
Moderator or core structure
Official title: Moderator or core structure; Selection of materials for use as moderator
G21C5/00 (Moderator or core structure) appears on 574 US grants and 417 published applications in this corpus.
Search patents in G21C- Granted patents
- 574
- Published applications
- 417
- Assignees
- 191
- Inventors
- 1,149
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 18 | 0 |
| 1977 | 8 | 0 |
| 1978 | 20 | 0 |
| 1979 | 11 | 0 |
| 1980 | 9 | 0 |
| 1981 | 10 | 0 |
| 1982 | 6 | 0 |
| 1983 | 8 | 0 |
| 1984 | 5 | 0 |
| 1985 | 5 | 0 |
| 1986 | 6 | 0 |
| 1987 | 26 | 0 |
| 1988 | 19 | 0 |
| 1989 | 16 | 0 |
| 1990 | 5 | 0 |
| 1991 | 9 | 0 |
| 1992 | 19 | 0 |
| 1993 | 14 | 0 |
| 1994 | 10 | 0 |
| 1995 | 9 | 0 |
| 1996 | 10 | 0 |
| 1997 | 14 | 0 |
| 1998 | 16 | 0 |
| 1999 | 12 | 0 |
| 2000 | 10 | 0 |
| 2001 | 9 | 0 |
| 2002 | 4 | 2 |
| 2003 | 3 | 2 |
| 2004 | 2 | 7 |
| 2005 | 7 | 4 |
| 2006 | 2 | 6 |
| 2007 | 3 | 9 |
| 2008 | 3 | 3 |
| 2009 | 2 | 14 |
| 2010 | 2 | 14 |
| 2011 | 4 | 16 |
| 2012 | 3 | 17 |
| 2013 | 9 | 19 |
| 2014 | 10 | 8 |
| 2015 | 11 | 20 |
| 2016 | 12 | 17 |
| 2017 | 13 | 22 |
| 2018 | 15 | 27 |
| 2019 | 14 | 13 |
| 2020 | 24 | 23 |
| 2021 | 26 | 26 |
| 2022 | 21 | 37 |
| 2023 | 26 | 34 |
| 2024 | 24 | 36 |
| 2025 | 13 | 16 |
| 2026 | 17 | 25 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Sulfur blanket6 Oct 2026US 12,755,853 B2Beam Alpha, Inc.
- 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.
- Passive heat removal system for nuclear reactors14 Jul 2026US 12,683,034 B2TerraPower, LLC
- Nuclear fuel rods and heat pipes in a graphite moderator matrix for a micro-reactor, with the fuel rods having fuel pellets in a BeO sleeve7 Jul 2026US 12,676,245 B2Westinghouse Electric Corp.
- Sodium cooled fast reactor mechanical hold down and discrimination system1 Oct 2026US 2026/0301978 A1TerraPower, LLC
- Calandria nuclear core assembly and method of assembling a nuclear moderator core system20 Aug 2026US 2026/0245752 A1Terrestrial Energy Inc.
- Devices, systems, and methods for cooling a nuclear reactor with hydride moderators20 Aug 2026US 2026/0245753 A1Westinghouse Electric Corp.
- Chain container reactor6 Aug 2026US 2026/0229374 A1Unists
- Fuel bundle with twisted ribbon fuel rodlets for nuclear thermal propulsion applications, structures for manufacture, and methods of manufacture6 Aug 2026US 2026/0229376 A1BWXT Advanced Technologies LLC
Most cited
By later US patents
- Threaded insert for repairing a nuclear assembly78US 5,065,490 ACombustion Engineering, Inc. · 1991
- Nuclear reactor incorporating locking device for threaded bolt connections50US 4,711,760 AWestinghouse Electric Corp. · 1987
- Nuclear reactor for breeding U.sup.23343US 3,960,655 AThe United States of America as represented by the United States Energy Research and Development Administration · 1976
- Shroud repair clamp43US 5,392,322 AGeneral Electric Company · 1995
- Spring latching mechanisms for preventing relative movement of assembled components43US 5,683,216 AGeneral Electric Company · 1997