G21C 3/338
Helicoidal spacer elements
G21C3/338 (Helicoidal spacer elements) appears on 20 US grants and 14 published applications in this corpus.
Search patents in G21C- Granted patents
- 20
- Published applications
- 14
- Assignees
- 12
- Inventors
- 62
- Latest grant
- 21 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 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 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 1 | 1 |
| 2018 | 0 | 1 |
| 2019 | 0 | 2 |
| 2020 | 2 | 0 |
| 2021 | 0 | 1 |
| 2022 | 0 | 4 |
| 2023 | 3 | 2 |
| 2024 | 0 | 1 |
| 2025 | 1 | 0 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Nuclear fuel assembly with multi-pitch wire wrap21 Apr 2026US 12,609,209 B2TerraPower, LLC
- 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
- Fast-neutron reactor fuel rod21 Mar 2023US 11,610,692 B2State Atomic Energy Corporation "Rosatom" On Behalf of the Russian Federation
- Spiral ntp fuel for power flattening20 Aug 2026US 2026/0245751 A1Standard Nuclear, Inc.
- Modular manufacture, delivery, and assembly of nuclear reactor building systems19 Sep 2024US 2024/0309665 A1TerraPower, LLC
- Nuclear fuel assembly with multi-pitch wire wrap12 Oct 2023US 2023/0323695 A1TerraPower, LLC
- Fuel-cladding chemical interaction resistant nuclear fuel elements and methods for manufacturing the same25 May 2023US 2023/0162873 A1
- Modular manufacture, delivery, and assembly of nuclear reactor building systems17 Feb 2022US 2022/0049516 A1GE-Hitachi Nuclear Energy Americas LLC
Most cited
By later US patents
- Fuel element assembly21US 4,324,618 AThe Babcock & Wilcox Company · 1982
- Locked-wrap fuel rod14US 4,005,521 AThe United States of America as represented by the United States Energy Research and Development Administration · 1977
- Fuel assembly for fast reactors11US 4,654,193 AHitachi, Ltd. · 1987
- Nuclear fuel element10US 4,557,892 AHitachi, Ltd. · 1985
- Nuclear fuel subassembly7US 3,930,940 ACommissariat A L' Energie Atomique · 1976