G21C 13/028
Seals
Official title: Seals, e.g. for pressure vessels or containment vessels
G21C13/028 (Seals) appears on 119 US grants and 76 published applications in this corpus.
Search patents in G21C- Granted patents
- 119
- Published applications
- 76
- Assignees
- 69
- Inventors
- 274
- Latest grant
- 21 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 5 | 0 |
| 1978 | 2 | 0 |
| 1979 | 2 | 0 |
| 1980 | 3 | 0 |
| 1981 | 2 | 0 |
| 1982 | 4 | 0 |
| 1983 | 4 | 0 |
| 1984 | 3 | 0 |
| 1985 | 3 | 0 |
| 1986 | 3 | 0 |
| 1987 | 3 | 0 |
| 1988 | 5 | 0 |
| 1989 | 2 | 0 |
| 1990 | 3 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 3 | 0 |
| 1994 | 4 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 3 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 1 | 2 |
| 2006 | 0 | 0 |
| 2007 | 1 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 1 | 1 |
| 2011 | 0 | 2 |
| 2012 | 0 | 3 |
| 2013 | 2 | 6 |
| 2014 | 1 | 2 |
| 2015 | 1 | 3 |
| 2016 | 2 | 1 |
| 2017 | 5 | 3 |
| 2018 | 2 | 9 |
| 2019 | 6 | 6 |
| 2020 | 6 | 5 |
| 2021 | 8 | 6 |
| 2022 | 4 | 9 |
| 2023 | 8 | 2 |
| 2024 | 1 | 5 |
| 2025 | 6 | 4 |
| 2026 | 4 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Nuclear fuel assembly with multi-pitch wire wrap21 Apr 2026US 12,609,209 B2TerraPower, LLC
- Electrical penetration3 Mar 2026US 12,567,507 B2Hitachi GE Vernova Nuclear Energy, Ltd.
- Containment for a nuclear reactor10 Feb 2026US 12,548,684 B2Energy Incorporated
- Closures for pressure vessels, and associated systems and methods27 Jan 2026US 12,537,111 B2NuScale Power, LLC
- Cable feedthrough for radioactive environments30 Sep 2025US 12,431,252 B2Schott AG
- Heat exchanger bellows seal assembly and methods of use10 Sep 2026US 2026/0269092 A1Natura Resources LLC
- Containment structure for nuclear system2 Jul 2026US 2026/0188531 A1Last Energy Inc.
- System & method for 3-d printing a nuclear reactor12 Feb 2026US 2026/0045376 A1Last Energy Inc.
- System for heat transfer between primary and secondary fluid circuits within a diffusion-bonded pressure vessel wall for a nuclear reactor5 Feb 2026US 2026/0038704 A1Last Energy Inc.
- Closures for pressure vessels, and associated systems and methods8 Jan 2026US 2026/0011458 A1NuScale Power, LLC
Most cited
By later US patents
- Lightweight, removable gate seal50US 4,355,000 AThe Presray Corporation · 1982
- Fuel transfer tube quick opening hatch49US 4,519,519 AWestinghouse Electric Corp. · 1985
- Mechanically expandable annular seal48US 4,394,022 A1983
- Outlet plug for recirculation loop of nuclear reactor34US 4,548,783 AGeneral Electric Company · 1985
- Removable pipeline plug24US 4,470,946 AAutomation Industries, Inc. · 1984