G21C 17/002
Detection of leaks
Official title: {Detection of leaks (by testing the coolant or the moderator G21C17/04)}
G21C17/002 (Detection of leaks) appears on 59 US grants and 50 published applications in this corpus.
Search patents in G21C- Granted patents
- 59
- Published applications
- 50
- Assignees
- 65
- Inventors
- 230
- Latest grant
- 21 Oct 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 3 | 0 |
| 1987 | 5 | 0 |
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 4 |
| 2011 | 2 | 3 |
| 2012 | 1 | 1 |
| 2013 | 1 | 3 |
| 2014 | 3 | 4 |
| 2015 | 2 | 1 |
| 2016 | 4 | 7 |
| 2017 | 2 | 3 |
| 2018 | 1 | 2 |
| 2019 | 3 | 2 |
| 2020 | 3 | 2 |
| 2021 | 2 | 4 |
| 2022 | 2 | 3 |
| 2023 | 5 | 1 |
| 2024 | 0 | 3 |
| 2025 | 1 | 3 |
| 2026 | 0 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Apparatus for detecting nuclear reactor coolant leaks21 Oct 2025US 12,451,261 B2Iucf-Hyu (Industry-University Cooperation Foundation Hanyang University)
- Acousto-optic leakage monitoring system for nuclear power plant main steam pipeline21 Nov 2023US 11,823,805 B2Shanghai Nuclear Engineering Research & Design Institute
- Defective fuel bundle location system10 Oct 2023US 11,783,955 B2BWXT Nuclear Energy Canada Inc.
- Apparatus for detecting position of radiation source19 Sep 2023US 11,762,105 B2Korea Atomic Energy Research Institute
- System for sensing UF6 gas leak in nuclear fuel manufacturing process8 Aug 2023US 11,721,446 B2Kepco Nuclear Fuel Co., Ltd.
- Method and apparatus for measuring activity concentration in the primary circuit of the high temperature gas-cooled reactor30 Jul 2026US 2026/0221299 A1Tsinghua University
- Method of testing leak rate of reactor containment building4 Jun 2026US 2026/0155269 A1Korea Hydro & Nuclear Power Co., Ltd.
- System and method for detecting leaks in a nuclear fuel pool assembly23 Apr 2026US 2026/0112512 A1Westinghouse Electric Corp.
- Trace oxygen sodium leak detection in nuclear reactor enclosure19 Mar 2026US 2026/0081046 A1TerraPower, LLC
- Systems and methods for small area leak detection13 Nov 2025US 2025/0347575 A1
Most cited
By later US patents
- Alkali metal leak detection method and apparatus188US 3,969,077 AVarian Associates, Inc. · 1976
- Leak detector for the dikes of nuclear cooling ponds38US 4,635,477 AAteliers de Constructions Electriques de Charleroi · 1987
- Method for detecting steam leakage in heat-exchanger having circulation tubes surrounded by liquid sodium and devices for the application of said method28US 3,975,943 AElectricite de France (Service National) · 1976
- Method for finding a leak in pressure-carrying vessels and apparatus for carrying out the method27US 4,640,121 AKraftwerk Union Aktiengesellschaft · 1987
- Method and apparatus for locating a defective tube of a liquid metal-to-water tube type heat exchanger25US 4,199,975 AWestinghouse Electric Corp. · 1980