G21C 3/336
Spacer elements for fuel rods in the bundle
Official title: Spacer elements for fuel rods in the bundle (spacer grids G21C3/34)
G21C3/336 (Spacer elements for fuel rods in the bundle) appears on 40 US grants and 31 published applications in this corpus.
Search patents in G21C- Granted patents
- 40
- Published applications
- 31
- Assignees
- 28
- Inventors
- 114
- Latest grant
- 21 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 3 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 1 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 2 |
| 2014 | 0 | 1 |
| 2015 | 0 | 2 |
| 2016 | 0 | 1 |
| 2017 | 2 | 5 |
| 2018 | 1 | 1 |
| 2019 | 5 | 4 |
| 2020 | 3 | 1 |
| 2021 | 1 | 1 |
| 2022 | 1 | 5 |
| 2023 | 3 | 2 |
| 2024 | 0 | 1 |
| 2025 | 2 | 1 |
| 2026 | 1 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Nuclear fuel assembly with multi-pitch wire wrap21 Apr 2026US 12,609,209 B2TerraPower, LLC
- Adjusting wait time between burn cycles or merging burn cycles28 Oct 2025US 12,456,557 B2Standard Nuclear, Inc.
- Modular manufacture, delivery, and assembly of nuclear reactor core systems16 Sep 2025US 12,416,175 B2TerraPower, LLC
- Modular manufacture, delivery, and assembly of nuclear reactor building systems5 Sep 2023US 11,746,550 B2TerraPower, LLC
- Nuclear fuel assembly with multi-pitch wire wrap15 Aug 2023US 11,725,411 B2TerraPower, LLC
- Spiral ntp fuel for power flattening20 Aug 2026US 2026/0245751 A1Standard Nuclear, Inc.
- Fuel assemblies for reactor systems16 Jul 2026US 2026/0204441 A1BAE SYSTEMS plc
- Fuel Assembly and Method for Producing Fuel Assembly8 Jan 2026US 2026/0011457 A1Hitachi GE Vernova Nuclear Energy, Ltd.
- Mandrel-wound, splined monolithic fuel assembly core, fuel assembly and reactor incorporating same, and methods of manufacture23 Jan 2025US 2025/0029740 A1BWXT Advanced Technologies LLC
- Modular manufacture, delivery, and assembly of nuclear reactor building systems19 Sep 2024US 2024/0309665 A1TerraPower, LLC
Most cited
By later US patents
- Fuel element assembly21US 4,324,618 AThe Babcock & Wilcox Company · 1982
- Fuel assembly comprising a component for retaining elongated elements20US 6,226,342 B1ABB Atom AB · 2001
- Passive reactivity control of nuclear thermal propulsion reactors17US 10,643,754 B2Ultra Safe Nuclear Corporation · 2020
- Nuclear fuel assembly17US 6,385,271 B1Westinghouse Atom AB · 2002
- Locked-wrap fuel rod14US 4,005,521 AThe United States of America as represented by the United States Energy Research and Development Administration · 1977