G21C 7/32
Control of nuclear reaction: by varying flow of coolant through the core
Official title: by varying flow of coolant through the core {by adjusting the coolant or moderator temperature}
G21C7/32 (Control of nuclear reaction: by varying flow of coolant through the core) appears on 48 US grants and 64 published applications in this corpus.
Search patents in G21C- Granted patents
- 48
- Published applications
- 64
- Assignees
- 36
- Inventors
- 193
- Latest grant
- 19 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 2 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 1 | 0 |
| 2008 | 0 | 2 |
| 2009 | 0 | 3 |
| 2010 | 0 | 6 |
| 2011 | 0 | 3 |
| 2012 | 1 | 3 |
| 2013 | 2 | 5 |
| 2014 | 2 | 2 |
| 2015 | 1 | 2 |
| 2016 | 2 | 5 |
| 2017 | 4 | 3 |
| 2018 | 3 | 3 |
| 2019 | 2 | 1 |
| 2020 | 4 | 2 |
| 2021 | 3 | 7 |
| 2022 | 2 | 0 |
| 2023 | 1 | 2 |
| 2024 | 5 | 3 |
| 2025 | 3 | 2 |
| 2026 | 1 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Computer apparatus for monitoring and verifying nuclear and fossil power plant heat losses based on the revised NCV method19 May 2026US 12,633,427 B2Lang Family Trust
- Passively-cooled spent nuclear fuel pool system30 Dec 2025US 12,512,230 B2Smr Inventec, LLC
- Apparatus for thermal performance monitoring and safe operation of a nuclear power plant16 Sep 2025US 12,417,856 B2Lang Family Trust
- Method for thermal performance monitoring of a nuclear power plant using the NCV method14 Jan 2025US 12,198,822 B2Lang Family Trust
- Method and apparatus for real-time learning-based augmented irradiation control and optimization1 Oct 2024US 12,106,865 B2Oregon State University
- Malfunction prevention valve and nuclear equipment comprising same24 Sep 2026US 2026/0290634 A1Korea Atomic Energy Research Institute
- Heat pipe measurement systems and methods10 Sep 2026US 2026/0269091 A1Westinghouse Electric Corp.
- Fast Reactor and Fast Reactor Operation Method27 Aug 2026US 2026/0253753 A1Hitachi GE Vernova Nuclear Energy, Ltd.
- Spiral ntp fuel for power flattening20 Aug 2026US 2026/0245751 A1Standard Nuclear, Inc.
- Nuclear Power Plant and Power Generation Method in Nuclear Power Plant2 Jul 2026US 2026/0188535 A1Hitachi-GE Nuclear Energy, Ltd.
Most cited
By later US patents
- Nuclear reactor having an ascending cooling path much greater than the descending cooling path17US 5,023,047 AHitachi, Ltd. · 1991
- Enhancing load-following and/or spectral shift capability in single-sparger natural circulation boiling water reactors15US 5,100,609 AGeneral Electric Company · 1992
- Nuclear reactor power control method and device14US 5,293,411 AHitachi, Ltd. · 1994
- System and method for annealing nuclear fission reactor materials14US 8,529,713 B2The Invention Science Fund I, LLC · 2013
- Systems and methods for maintaining cover gas in nuclear reactors13US 11,031,140 B2GE-Hitachi Nuclear Energy Americas LLC · 2021