G21C 17/00
Monitoring
Official title: Monitoring; Testing (measuring in general G01); {Maintaining}
G21C17/00 (Monitoring) appears on 2,347 US grants and 1,529 published applications in this corpus.
Search patents in G21C- Granted patents
- 2,347
- Published applications
- 1,529
- Assignees
- 606
- Inventors
- 5,005
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 52 | 0 |
| 1977 | 43 | 0 |
| 1978 | 39 | 0 |
| 1979 | 33 | 0 |
| 1980 | 33 | 0 |
| 1981 | 32 | 0 |
| 1982 | 36 | 0 |
| 1983 | 40 | 0 |
| 1984 | 30 | 0 |
| 1985 | 37 | 0 |
| 1986 | 53 | 0 |
| 1987 | 100 | 0 |
| 1988 | 58 | 0 |
| 1989 | 57 | 0 |
| 1990 | 57 | 0 |
| 1991 | 65 | 0 |
| 1992 | 64 | 0 |
| 1993 | 64 | 0 |
| 1994 | 61 | 0 |
| 1995 | 56 | 0 |
| 1996 | 49 | 0 |
| 1997 | 36 | 0 |
| 1998 | 40 | 0 |
| 1999 | 38 | 0 |
| 2000 | 14 | 0 |
| 2001 | 29 | 9 |
| 2002 | 46 | 30 |
| 2003 | 38 | 33 |
| 2004 | 14 | 29 |
| 2005 | 22 | 29 |
| 2006 | 17 | 41 |
| 2007 | 14 | 37 |
| 2008 | 19 | 40 |
| 2009 | 11 | 42 |
| 2010 | 26 | 86 |
| 2011 | 25 | 75 |
| 2012 | 41 | 97 |
| 2013 | 55 | 104 |
| 2014 | 85 | 82 |
| 2015 | 64 | 79 |
| 2016 | 72 | 78 |
| 2017 | 76 | 72 |
| 2018 | 47 | 74 |
| 2019 | 81 | 65 |
| 2020 | 73 | 95 |
| 2021 | 61 | 65 |
| 2022 | 63 | 64 |
| 2023 | 55 | 52 |
| 2024 | 54 | 66 |
| 2025 | 44 | 45 |
| 2026 | 28 | 40 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- G21C 17/10Structural combination of fuel element, control rod, reactor core, or moderator structure622
- G21C 17/02Devices or arrangements for monitoring coolant or moderator472
- G21C 17/06Devices or arrangements for monitoring or testing fuel or fuel elements outside396
- G21C 17/003Remote inspection of vessels331
- G21C 17/017Inspection or maintenance of pipe-lines or tubes in nuclear installations273
- G21C 17/002Detection of leaks59
- G21C 17/08Structural combination of reactor core or moderator structure with viewing means29
- G21C 17/001Mechanical simulators18
All 9 subgroupsShow fewer
Recent patents
- Systems and methods for simulating an operation of one or more automated tools within a nuclear facility15 Sep 2026US 12,738,387 B2Ats Corporation
- Probabilistic evaluation of fastener degradation in nuclear power plants8 Sep 2026US 12,731,078 B2Framatome
- System including a bypass pipe that routes some sodium coolant from a primary pump discharge upward to sodium measuring instruments located near a nuclear reactor head25 Aug 2026US 12,718,961 B2TerraPower, LLC
- Neutron radiation detector14 Jul 2026US 12,681,198 B2Westinghouse Electric Corp.
- Method for measuring drop time of a control rod cluster integrated with a rod position measurement device7 Jul 2026US 12,676,247 B2Nuclear Power Operations Research Institute (Npri)
- Method calibrating power monitors for molten salt reactors at low power8 Oct 2026US 2026/0311900 A1Abilene Christian University
- Methods and systems for thermal mix-point fatigue analysis1 Oct 2026US 2026/0300584 A1Akselos S.A.
- Apparatus for controlling nuclear reactor and method thereof1 Oct 2026US 2026/0301979 A1Korea Atomic Energy Research Institute
- Nuclear reactor protection systems and methods1 Oct 2026US 2026/0301980 A1NuScale Power, LLC
- Device and method for mechanically testing a tubular nuclear fuel cladding sample under accident conditions24 Sep 2026US 2026/0290637 A1Commissariat A L' Energie Atomique Et Aux Energies Alternatives
Most cited
By later US patents
- Plant maintenance with predictive diagnostics387US 5,311,562 AWestinghouse Electric Corp. · 1994
- Flexible cable243US 5,174,164 AWestinghouse Electric Corp. · 1992
- Modular observation crawler and sensing instrument and method for operating same200US 6,450,104 B1North Carolina State University · 2002
- Alkali metal leak detection method and apparatus188US 3,969,077 AVarian Associates, Inc. · 1976
- Alarm management system144US 4,816,208 AWestinghouse Electric Corp. · 1989