G21C 13/00
Pressure vessels
Official title: Pressure vessels; Containment vessels; Containment in general (for chemical or physical processes B01J3/00; pressure vessels in general F16J12/00)
G21C13/00 (Pressure vessels) appears on 1,208 US grants and 744 published applications in this corpus.
Search patents in G21C- Granted patents
- 1,208
- Published applications
- 744
- Assignees
- 351
- Inventors
- 2,388
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 26 | 0 |
| 1977 | 40 | 0 |
| 1978 | 42 | 0 |
| 1979 | 16 | 0 |
| 1980 | 25 | 0 |
| 1981 | 29 | 0 |
| 1982 | 26 | 0 |
| 1983 | 17 | 0 |
| 1984 | 20 | 0 |
| 1985 | 9 | 0 |
| 1986 | 27 | 0 |
| 1987 | 48 | 0 |
| 1988 | 36 | 0 |
| 1989 | 32 | 0 |
| 1990 | 17 | 0 |
| 1991 | 18 | 0 |
| 1992 | 21 | 0 |
| 1993 | 39 | 0 |
| 1994 | 27 | 0 |
| 1995 | 22 | 0 |
| 1996 | 25 | 0 |
| 1997 | 26 | 0 |
| 1998 | 37 | 0 |
| 1999 | 12 | 0 |
| 2000 | 11 | 0 |
| 2001 | 11 | 1 |
| 2002 | 8 | 5 |
| 2003 | 10 | 18 |
| 2004 | 6 | 7 |
| 2005 | 9 | 15 |
| 2006 | 2 | 7 |
| 2007 | 6 | 14 |
| 2008 | 2 | 8 |
| 2009 | 5 | 14 |
| 2010 | 9 | 21 |
| 2011 | 9 | 21 |
| 2012 | 8 | 35 |
| 2013 | 21 | 51 |
| 2014 | 30 | 35 |
| 2015 | 15 | 52 |
| 2016 | 32 | 46 |
| 2017 | 42 | 40 |
| 2018 | 37 | 41 |
| 2019 | 48 | 43 |
| 2020 | 51 | 54 |
| 2021 | 41 | 39 |
| 2022 | 41 | 53 |
| 2023 | 33 | 29 |
| 2024 | 26 | 43 |
| 2025 | 26 | 25 |
| 2026 | 32 | 27 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Steel plate composite wall panel structures, such as for use in nuclear reactor buildings, and associated systems and methods6 Oct 2026US 12,753,602 B2NuScale Power, LLC
- Nuclear modular isolated reactor support system assembly and modules29 Sep 2026US 12,749,587 B2GE-Hitachi Nuclear Energy Americas LLC
- Integrated monopile system having a nuclear reactor18 Aug 2026US 12,712,090 B2Blue Energy Global Inc.
- Passive heat removal system for nuclear reactors14 Jul 2026US 12,683,034 B2TerraPower, LLC
- Method of manufacturing a dome made of welded components30 Jun 2026US 12,667,918 B2Rolls-Royce Smr Limited
- Leak containment and support housing system8 Oct 2026US 2026/0311899 A1
- A Modular Transportable Nuclear Power Plant24 Sep 2026US 2026/0285450 A1Energie propre Prodigy Ltee / Prodigy Clean Energy Ltd.
- Molten salt reactor and molten salt reactor system17 Sep 2026US 2026/0279605 A1Iucf-Hyu (Industry-University Cooperation Foundation Hanyang
- Heat exchanger bellows seal assembly and methods of use10 Sep 2026US 2026/0269092 A1Natura Resources LLC
- 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
- Apparatus and method for inspecting a control rod drive mechanism penetration tube for degradation60US 5,396,800 AWestinghouse Electric Corp. · 1995
- Passive containment cooling system52US 5,049,353 AWestinghouse Electric Corp. · 1991
- Ultrasonic dip seal maintenance system51US 4,116,766 AThe United States of America as represented by the Department of Energy · 1978
- Lightweight, removable gate seal50US 4,355,000 AThe Presray Corporation · 1982