G21C 3/3315
Upper nozzle
Official title: {Upper nozzle}
G21C3/3315 (Upper nozzle) appears on 88 US grants and 55 published applications in this corpus.
Search patents in G21C- Granted patents
- 88
- Published applications
- 55
- Assignees
- 41
- Inventors
- 194
- Latest grant
- 1 Jul 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 3 | 0 |
| 1986 | 5 | 0 |
| 1987 | 9 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 3 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 1 | 1 |
| 2005 | 0 | 0 |
| 2006 | 1 | 1 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 1 | 3 |
| 2010 | 0 | 3 |
| 2011 | 1 | 3 |
| 2012 | 3 | 4 |
| 2013 | 6 | 3 |
| 2014 | 1 | 3 |
| 2015 | 4 | 1 |
| 2016 | 2 | 3 |
| 2017 | 1 | 3 |
| 2018 | 3 | 5 |
| 2019 | 3 | 5 |
| 2020 | 2 | 4 |
| 2021 | 5 | 3 |
| 2022 | 6 | 2 |
| 2023 | 3 | 4 |
| 2024 | 3 | 0 |
| 2025 | 1 | 2 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Device for assembling and disassembling top nozzle of nuclear fuel assembly1 Jul 2025US 12,347,578 B2Kepco Nuclear Fuel Co., Ltd.
- Deforming a portion of a nut threaded on a guide tube end plug to lock the nut to a lower end fitting of a nuclear reactor fuel assembly4 Jun 2024US 12,002,593 B2BWXT mPower, Inc.
- Nuclear fuel assembly for a boiling water reactor with redundant load chain28 May 2024US 11,996,207 B2Framatome
- Control rod drive system for nuclear reactor19 Mar 2024US 11,935,663 B2Smr Inventec, LLC
- Quick-detachable connecting device with simplified thread structure and connection method using same28 Nov 2023US 11,828,324 B1Sichuan University
- Fuel Assembly and Method for Producing Fuel Assembly8 Jan 2026US 2026/0011457 A1Hitachi GE Vernova Nuclear Energy, Ltd.
- Improved nuclear fuel assembly with enhanced seismic performance and control rod worth14 Aug 2025US 2025/0259758 A1Kepco Nuclear Fuel Co., Ltd.
- Device for assembling and disassembling top nozzle of nuclear fuel assembly23 Jan 2025US 2025/0029739 A1Kepco Nuclear Fuel Co., Ltd.
- Quick-detachable connecting device with simplified thread structure and connection method using same14 Dec 2023US 2023/0400046 A1Sichuan University
- Three dimensional printed precision magnets for fuel assembly20 Jul 2023US 2023/0230713 A1Westinghouse Electric Corp.
Most cited
By later US patents
- Nuclear fuel assembly58US 4,560,532 AWestinghouse Electric Corp. · 1985
- PWR Integral tie plate and locking mechanism37US 4,219,386 AExxon Nuclear Company, Inc. · 1980
- Reversible BWR fuel assembly and method of using same30US 4,655,995 AWestinghouse Electric Corp. · 1987
- Spring element for holding down nuclear reactor fuel assembly27US 4,278,501 AKraftwerk Union Aktiengesellschaft · 1981
- Fuel assembly for a nuclear reactor26US 3,992,259 ACombustion Engineering, Inc. · 1976