G21C 17/02
Devices or arrangements for monitoring coolant or moderator
G21C17/02 (Devices or arrangements for monitoring coolant or moderator) appears on 472 US grants and 341 published applications in this corpus.
Search patents in G21C- Granted patents
- 472
- Published applications
- 341
- Assignees
- 171
- Inventors
- 1,191
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 17 | 0 |
| 1977 | 7 | 0 |
| 1978 | 4 | 0 |
| 1979 | 6 | 0 |
| 1980 | 3 | 0 |
| 1981 | 8 | 0 |
| 1982 | 5 | 0 |
| 1983 | 10 | 0 |
| 1984 | 4 | 0 |
| 1985 | 8 | 0 |
| 1986 | 9 | 0 |
| 1987 | 12 | 0 |
| 1988 | 10 | 0 |
| 1989 | 11 | 0 |
| 1990 | 11 | 0 |
| 1991 | 13 | 0 |
| 1992 | 14 | 0 |
| 1993 | 10 | 0 |
| 1994 | 14 | 0 |
| 1995 | 10 | 0 |
| 1996 | 7 | 0 |
| 1997 | 11 | 0 |
| 1998 | 11 | 0 |
| 1999 | 6 | 0 |
| 2000 | 4 | 0 |
| 2001 | 2 | 3 |
| 2002 | 12 | 8 |
| 2003 | 5 | 6 |
| 2004 | 2 | 3 |
| 2005 | 7 | 4 |
| 2006 | 1 | 6 |
| 2007 | 0 | 3 |
| 2008 | 3 | 11 |
| 2009 | 0 | 13 |
| 2010 | 5 | 15 |
| 2011 | 7 | 21 |
| 2012 | 9 | 20 |
| 2013 | 11 | 19 |
| 2014 | 22 | 25 |
| 2015 | 12 | 17 |
| 2016 | 12 | 20 |
| 2017 | 23 | 20 |
| 2018 | 12 | 12 |
| 2019 | 18 | 9 |
| 2020 | 15 | 28 |
| 2021 | 11 | 18 |
| 2022 | 15 | 16 |
| 2023 | 9 | 12 |
| 2024 | 14 | 14 |
| 2025 | 14 | 11 |
| 2026 | 6 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- G21C 17/022For monitoring liquid coolants or moderators271
- G21C 17/04Detecting burst slugs63
- G21C 17/035Moderator- or coolant-level detecting devices59
- G21C 17/032Reactor-coolant flow measuring or monitoring56
- G21C 17/028For monitoring gaseous coolants17
- G21C 17/038Boiling detection in moderator or coolant6
- G21C 17/021Solid moderators testing1
Recent patents
- 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
- Method for treating a metal part of a primary circuit of a water-cooled nuclear reactor9 Jun 2026US 12,651,674 B2Commissariat A L' Energie Atomique Et Aux Energies Alternatives
- Integrated control logic device and operating method thereof to control water level of steam generator of nuclear power plant26 May 2026US 12,638,171 B2Kepco Engineering & Construction Company, Inc.
- Method for determining real-time thermal power of a nuclear reactor based on number of gamma rays counted19 May 2026US 12,633,426 B2Max-Planck-Gesellschaft Zur FöRderung Der Wissenschaften E. V.
- Computer apparatus for monitoring and verifying nuclear and fossil power plant heat losses based on the revised NCV method19 May 2026US 12,633,427 B2Lang Family Trust
- Method calibrating power monitors for molten salt reactors at low power8 Oct 2026US 2026/0311900 A1Abilene Christian University
- Method and apparatus for measuring activity concentration in the primary circuit of the high temperature gas-cooled reactor30 Jul 2026US 2026/0221299 A1Tsinghua University
- Modular sodium pressure sensor for nuclear reactor23 Jul 2026US 2026/0213029 A1TerraPower, LLC
- Metal injection system using electrolysis of metal in a nuclear power plant2 Jul 2026US 2026/0188533 A1GE-Hitachi Nuclear Energy Americas LLC
- A method of adjusting oxoacidity14 May 2026US 2026/0135007 A1Seaborg Aps
Most cited
By later US patents
- Process for decontaminating a nuclear reactor coolant system50US 5,305,360 AWestinghouse Electric Corp. · 1994
- Methods and apparatus for time domain reflectometry determination of relative proportion, fluid inventory and turbulence49US 4,786,857 A1988
- Method for reducing corrosion of components exposed to high-temperature water47US 5,135,709 AGeneral Electric Company · 1992
- Nuclear reactor internals construction and failed fuel rod detection system41US 3,940,311 AWestinghouse Electric Corp. · 1976
- Method for electromagnetic ultrasonic conversion for monitoring the fill level and bubble formation in enclosures containing liquid41US 4,934,191 ASiemens Aktiengesellschaft · 1990