G21C 19/20
Arrangements for introducing objects into the pressure vessel
Official title: Arrangements for introducing objects into the pressure vessel; Arrangements for handling objects within the pressure vessel; Arrangements for removing objects from the pressure vessel
G21C19/20 (Arrangements for introducing objects into the pressure vessel) appears on 501 US grants and 444 published applications in this corpus.
Search patents in G21C- Granted patents
- 501
- Published applications
- 444
- Assignees
- 146
- Inventors
- 1,087
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 6 | 0 |
| 1978 | 6 | 0 |
| 1979 | 3 | 0 |
| 1980 | 2 | 0 |
| 1981 | 5 | 0 |
| 1982 | 3 | 0 |
| 1983 | 1 | 0 |
| 1984 | 4 | 0 |
| 1985 | 1 | 0 |
| 1986 | 6 | 0 |
| 1987 | 12 | 0 |
| 1988 | 6 | 0 |
| 1989 | 6 | 0 |
| 1990 | 2 | 0 |
| 1991 | 10 | 0 |
| 1992 | 11 | 0 |
| 1993 | 7 | 0 |
| 1994 | 11 | 0 |
| 1995 | 8 | 0 |
| 1996 | 4 | 0 |
| 1997 | 12 | 0 |
| 1998 | 10 | 0 |
| 1999 | 9 | 0 |
| 2000 | 3 | 0 |
| 2001 | 4 | 0 |
| 2002 | 5 | 5 |
| 2003 | 4 | 5 |
| 2004 | 2 | 12 |
| 2005 | 7 | 13 |
| 2006 | 6 | 12 |
| 2007 | 7 | 6 |
| 2008 | 8 | 13 |
| 2009 | 6 | 16 |
| 2010 | 11 | 21 |
| 2011 | 8 | 31 |
| 2012 | 12 | 26 |
| 2013 | 12 | 30 |
| 2014 | 21 | 19 |
| 2015 | 25 | 27 |
| 2016 | 21 | 24 |
| 2017 | 25 | 22 |
| 2018 | 25 | 24 |
| 2019 | 23 | 20 |
| 2020 | 27 | 21 |
| 2021 | 18 | 24 |
| 2022 | 17 | 18 |
| 2023 | 15 | 15 |
| 2024 | 14 | 21 |
| 2025 | 14 | 9 |
| 2026 | 11 | 10 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- In-vessel natural circulation alkali metal reactor system, purification system, and associated methods6 Oct 2026US 12,755,855 B2Oklo Inc.
- Method for removing dousing tank of heavy water reactor structure11 Aug 2026US 12,706,226 B2Korea Hydro & Nuclear Power Co., Ltd.
- Shaft coupling and uncoupling tool28 Jul 2026US 12,694,998 B2Westinghouse Electric Corp.
- Internals lifting device30 Jun 2026US 12,671,005 B2Rolls-Royce Smr Limited
- Nuclear reactor and method of opening a nuclear reactor16 Jun 2026US 12,658,331 B2Rolls-Royce Smr Limited
- Nuclear instrument removal system for use with processing a nuclear instrument, associated feed and cut module, and method of processing a nuclear instrument17 Sep 2026US 2026/0279608 A1Hi-Tech Solutions Ltd.
- Refuelling and/or storage neutron-absorbing rods17 Sep 2026US 2026/0279609 A1Rolls-Royce Smr Limited
- Hamr pebble reactor23 Jul 2026US 2026/0213027 A1Odin Electric, Inc.
- In-situ evaporative removal of liquid metal coolant from nuclear reactor fuel rods and components25 Jun 2026US 2026/0179794 A1Aalo Holdings, Inc., dba Aalo Atomics
- Nuclear instrument removal system for use with processing a nuclear instrument, associated feed and cut module, and method of processing a nuclear instrument21 May 2026US 2026/0142047 A1Hi-Tech Solutions Ltd.
Most cited
By later US patents
- Method of refueling reactor54US 4,158,599 AWestinghouse Electric Corp. · 1979
- Method for monitoring the emplacement of a transportable element and the tightness of its joint with a fixed structure, and the use of this method51US 5,182,076 AFramatome · 1993
- Fission reaction control in a molten salt reactor43US 10,438,705 B2TerraPower, LLC · 2019
- Method for repairing boiling water reactor shrouds41US 5,402,570 AMPR Associates, Inc. · 1995
- Undervessel arrangement40US 4,585,611 AGeneral Electric Company · 1986