G21C 7/08
By displacement of solid control elements
Official title: by displacement of solid control elements, e.g. control rods
G21C7/08 (By displacement of solid control elements) appears on 754 US grants and 450 published applications in this corpus.
Search patents in G21C- Granted patents
- 754
- Published applications
- 450
- Assignees
- 192
- Inventors
- 1,503
- Latest grant
- 7 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 31 | 0 |
| 1977 | 13 | 0 |
| 1978 | 18 | 0 |
| 1979 | 11 | 0 |
| 1980 | 9 | 0 |
| 1981 | 10 | 0 |
| 1982 | 11 | 0 |
| 1983 | 13 | 0 |
| 1984 | 15 | 0 |
| 1985 | 7 | 0 |
| 1986 | 18 | 0 |
| 1987 | 40 | 0 |
| 1988 | 24 | 0 |
| 1989 | 31 | 0 |
| 1990 | 16 | 0 |
| 1991 | 25 | 0 |
| 1992 | 17 | 0 |
| 1993 | 20 | 0 |
| 1994 | 14 | 0 |
| 1995 | 15 | 0 |
| 1996 | 10 | 0 |
| 1997 | 8 | 0 |
| 1998 | 18 | 0 |
| 1999 | 8 | 0 |
| 2000 | 10 | 0 |
| 2001 | 11 | 2 |
| 2002 | 6 | 12 |
| 2003 | 10 | 3 |
| 2004 | 8 | 5 |
| 2005 | 6 | 8 |
| 2006 | 1 | 7 |
| 2007 | 2 | 15 |
| 2008 | 6 | 7 |
| 2009 | 6 | 13 |
| 2010 | 3 | 15 |
| 2011 | 5 | 19 |
| 2012 | 8 | 27 |
| 2013 | 14 | 43 |
| 2014 | 22 | 20 |
| 2015 | 10 | 23 |
| 2016 | 20 | 28 |
| 2017 | 29 | 16 |
| 2018 | 21 | 22 |
| 2019 | 28 | 17 |
| 2020 | 21 | 22 |
| 2021 | 18 | 23 |
| 2022 | 27 | 31 |
| 2023 | 22 | 21 |
| 2024 | 14 | 15 |
| 2025 | 15 | 17 |
| 2026 | 9 | 19 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Control rod damping system7 Jul 2026US 12,676,246 B2NuScale Power, LLC
- Method for measuring drop time of a control rod cluster integrated with a rod position measurement device7 Jul 2026US 12,676,247 B2Nuclear Power Operations Research Institute (Npri)
- Microreactor with control neutron absorber assembly including a control neutron absorber rod30 Jun 2026US 12,671,004 B2Battelle Energy Alliance, LLC
- Nuclear reactor and method of opening a nuclear reactor16 Jun 2026US 12,658,331 B2Rolls-Royce Smr Limited
- Nuclear fuel assembly with a reinforcement device28 Apr 2026US 12,614,642 B2Framatome
- Apparatus for controlling nuclear reactor and method thereof1 Oct 2026US 2026/0301979 A1Korea Atomic Energy Research Institute
- Molten salt reactor and molten salt reactor system17 Sep 2026US 2026/0279605 A1Iucf-Hyu (Industry-University Cooperation Foundation Hanyang
- Chain container reactor6 Aug 2026US 2026/0229374 A1Unists
- Hamr pebble reactor23 Jul 2026US 2026/0213027 A1Odin Electric, Inc.
- Core component assembly including test samples for an in-core accelerated irradiation test18 Jun 2026US 2026/0171273 A1Westinghouse Electric Corp.
Most cited
By later US patents
- Method and apparatus for preventing relative rotation of tube members in a control rod drive mechanism96US 6,275,556 B1Westinghouse Electric Corp. · 2001
- Control cell nuclear reactor core49US 4,285,769 AGeneral Electric Company · 1981
- Boiling water reactor nuclear power plant and its construction method46US 6,810,099 B2Kabushiki Kaisha Toshiba · 2004
- Dashpot construction for a nuclear reactor rod guide thimble42US 5,068,083 AWestinghouse Electric Corp. · 1991
- Nuclear reactor internals construction and failed fuel rod detection system41US 3,940,311 AWestinghouse Electric Corp. · 1976