G21C 9/00
Emergency protection arrangements structurally associated with the reactor
Official title: Emergency protection arrangements structurally associated with the reactor {, e.g. safety valves provided with pressure equalisation devices}(emergency cooling arrangements G21C15/18)
G21C9/00 (Emergency protection arrangements structurally associated with the reactor) appears on 757 US grants and 528 published applications in this corpus.
Search patents in G21C- Granted patents
- 757
- Published applications
- 528
- Assignees
- 249
- Inventors
- 1,561
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 24 | 0 |
| 1977 | 23 | 0 |
| 1978 | 23 | 0 |
| 1979 | 14 | 0 |
| 1980 | 12 | 0 |
| 1981 | 15 | 0 |
| 1982 | 11 | 0 |
| 1983 | 12 | 0 |
| 1984 | 7 | 0 |
| 1985 | 7 | 0 |
| 1986 | 17 | 0 |
| 1987 | 27 | 0 |
| 1988 | 14 | 0 |
| 1989 | 16 | 0 |
| 1990 | 13 | 0 |
| 1991 | 16 | 0 |
| 1992 | 17 | 0 |
| 1993 | 13 | 0 |
| 1994 | 21 | 0 |
| 1995 | 13 | 0 |
| 1996 | 10 | 0 |
| 1997 | 12 | 0 |
| 1998 | 13 | 0 |
| 1999 | 10 | 0 |
| 2000 | 3 | 0 |
| 2001 | 10 | 0 |
| 2002 | 7 | 7 |
| 2003 | 6 | 9 |
| 2004 | 5 | 5 |
| 2005 | 7 | 4 |
| 2006 | 1 | 5 |
| 2007 | 1 | 4 |
| 2008 | 0 | 5 |
| 2009 | 4 | 11 |
| 2010 | 4 | 12 |
| 2011 | 5 | 9 |
| 2012 | 6 | 27 |
| 2013 | 8 | 28 |
| 2014 | 18 | 36 |
| 2015 | 8 | 34 |
| 2016 | 27 | 31 |
| 2017 | 24 | 31 |
| 2018 | 28 | 45 |
| 2019 | 32 | 26 |
| 2020 | 47 | 38 |
| 2021 | 30 | 29 |
| 2022 | 38 | 35 |
| 2023 | 20 | 27 |
| 2024 | 21 | 29 |
| 2025 | 18 | 21 |
| 2026 | 19 | 20 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Nuclear modular isolated reactor support system assembly and modules29 Sep 2026US 12,749,587 B2GE-Hitachi Nuclear Energy Americas LLC
- Refillable volatile composition dispenser18 Aug 2026US 12,708,691 B2The Procter & Gamble Company
- Passive heat removal system for nuclear reactors14 Jul 2026US 12,683,034 B2TerraPower, LLC
- Control rod damping system7 Jul 2026US 12,676,246 B2NuScale Power, LLC
- Nuclear reactor and method of opening a nuclear reactor16 Jun 2026US 12,658,331 B2Rolls-Royce Smr Limited
- Nuclear reactor protection systems and methods1 Oct 2026US 2026/0301980 A1NuScale Power, LLC
- Molten salt reactor and molten salt reactor system17 Sep 2026US 2026/0279605 A1Iucf-Hyu (Industry-University Cooperation Foundation Hanyang
- Bubble-enhanced natural convection reactor flow10 Sep 2026US 2026/0269095 A1
- Valve set for safety of nuclear power plant, pressure relief valve set, discharge valve set, and isolation valve27 Aug 2026US 2026/0253755 A1China Nuclear Power Engineering Co., Ltd.
- Containment vacuum breaker13 Aug 2026US 2026/0237532 A1NuScale Power, LLC
Most cited
By later US patents
- Underground nuclear power station using self-regulating heat-pipe controlled reactors98US 4,851,183 AThe United States of America as represented by the United States Department of Energy · 1989
- Integral PWR with diverse emergency cooling and method of operating same59US 6,795,518 B1Polytechnic of Milan · 2004
- Passive containment system for a nuclear reactor47US 3,984,282 ANucledyne Engineering Corporation · 1976
- Safety design for nuclear power plants47US 4,971,752 A1990
- Full pressure passive emergency core cooling and residual heat removal system for water cooled nuclear reactors47US 5,102,616 ARolls-Royce and Associates Limited · 1992