G21C 9/027
By fast movement of a solid
Official title: by fast movement of a solid, e.g. pebbles
G21C9/027 (By fast movement of a solid) appears on 46 US grants and 25 published applications in this corpus.
Search patents in G21C- Granted patents
- 46
- Published applications
- 25
- Assignees
- 34
- Inventors
- 133
- Latest grant
- 7 Oct 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 2 | 0 |
| 1978 | 6 | 0 |
| 1979 | 4 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 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 | 2 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 2 |
| 2004 | 2 | 0 |
| 2005 | 1 | 1 |
| 2006 | 0 | 0 |
| 2007 | 1 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 2 |
| 2012 | 0 | 1 |
| 2013 | 0 | 0 |
| 2014 | 1 | 1 |
| 2015 | 0 | 1 |
| 2016 | 0 | 3 |
| 2017 | 2 | 1 |
| 2018 | 1 | 2 |
| 2019 | 3 | 0 |
| 2020 | 0 | 3 |
| 2021 | 2 | 1 |
| 2022 | 1 | 0 |
| 2023 | 0 | 1 |
| 2024 | 0 | 0 |
| 2025 | 1 | 2 |
| 2026 | 0 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Control drum controller for nuclear reactor system7 Oct 2025US 12,437,887 B2Standard Nuclear, Inc.
- Secondary shutdown structure of nuclear reactor by using sliding doors1 Nov 2022US 11,488,732 B2Kepco Engineering & Construction Company, Inc.
- Passive electrical component for safety system shutdown using Gauss' Law31 Aug 2021US 11,107,594 B2GE-Hitachi Nuclear Energy Americas LLC
- Nuclear reactor, with control and shutdown rods external to the core and core supporting structures24 Aug 2021US 11,101,046 B2Hydromine Nuclear Energy S.A.R.L.
- Heat pipe molten salt fast reactor with stagnant liquid core17 Dec 2019US 10,510,450 B2Westinghouse Electric Corp.
- Control rod assembly with enhanced control rod worth21 May 2026US 2026/0142043 A1Kepco Nuclear Fuel Co., Ltd.
- Control rod assembly with enhanced control rod worth using 28 neutron absorber rods21 May 2026US 2026/0142044 A1Kepco Nuclear Fuel Co., Ltd.
- Control rod assembly with enhanced control rod worth using highly enriched b4c21 May 2026US 2026/0142045 A1Kepco Nuclear Fuel Co., Ltd.
- Nuclear reactor shutdown system and method of nuclear reactor shutdown5 Jun 2025US 2025/0182917 A1Mitsubishi Heavy Industries, Ltd.
- Nuclear reactor shutdown system and method of nuclear reactor shutdown15 May 2025US 2025/0157679 A1Mitsubishi Heavy Industries, Ltd.
Most cited
By later US patents
- Method and apparatus for controlling the neutron flux in nuclear reactors15US 4,158,602 AElectric Power Research Institute, Inc. · 1979
- Control rod drive for reactor shutdown14US 3,933,581 AThe United States of America as represented by the United States Energy Research and Development Administration · 1976
- Magnetic latch trigger for inherent shutdown assembly13US 3,976,540 AThe United States of America as represented by the United States Energy Research and Development Administration · 1976
- Neutron-absorber release device13US 3,992,257 AThe United States of America as represented by the United States Energy Research and Development Administration · 1976
- Safety device for a nuclear reactor and especially a fast reactor12US 4,019,954 ACommissariat A L' Energie Atomique · 1977