G21C 3/3424
Fabrication of spacer grids
Official title: {Fabrication of spacer grids}
G21C3/3424 (Fabrication of spacer grids) appears on 76 US grants and 23 published applications in this corpus.
Search patents in G21C- Granted patents
- 76
- Published applications
- 23
- Assignees
- 29
- Inventors
- 168
- Latest grant
- 23 Jul 2019
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 13 | 0 |
| 1986 | 0 | 0 |
| 1987 | 7 | 0 |
| 1988 | 2 | 0 |
| 1989 | 2 | 0 |
| 1990 | 5 | 0 |
| 1991 | 2 | 0 |
| 1992 | 3 | 0 |
| 1993 | 6 | 0 |
| 1994 | 3 | 0 |
| 1995 | 3 | 0 |
| 1996 | 3 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 2 | 1 |
| 2003 | 1 | 1 |
| 2004 | 1 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 1 |
| 2009 | 0 | 2 |
| 2010 | 1 | 2 |
| 2011 | 2 | 4 |
| 2012 | 1 | 0 |
| 2013 | 2 | 1 |
| 2014 | 2 | 1 |
| 2015 | 2 | 0 |
| 2016 | 0 | 3 |
| 2017 | 1 | 1 |
| 2018 | 1 | 0 |
| 2019 | 3 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 1 |
| 2022 | 0 | 1 |
| 2023 | 0 | 2 |
| 2024 | 0 | 0 |
| 2025 | 0 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Laser welding apparatus for spacer grid of nuclear fuel assembly23 Jul 2019US 10,361,006 B2Kepco Nuclear Fuel Co., Ltd.
- Holding fixture to assist in assembly of support grid for nuclear fuel rods and method for assembling support grid for nuclear fuel rods4 Jun 2019US 10,311,982 B2Westinghouse Electric Corp.
- Spacers with deflection-limited rod contacts for nuclear fuel assemblies and methods of making the same8 Jan 2019US 10,176,899 B2Global Nuclear Fuel - Americas, LLC
- Spot welding gun and welding method for the nuclear fuel skeleton3 Apr 2018US 9,934,878 B2Kepco Nuclear Fuel Co., Ltd.
- Charging device of a welding fixture of spacer grid16 May 2017US 9,649,724 B2Kepco Nuclear Fuel Co., Ltd.
- Spot-welding fixture for spacer grid of nuclear fuel assembly3 Sep 2026US 2026/0260771 A1Kepco Nuclear Fuel Co., Ltd.
- Internal electrode insertion device for welding equipment for skeleton of nuclear fuel assembly29 Jun 2023US 2023/0207143 A1Kepco Nuclear Fuel Co., Ltd.
- Spacer grid of nuclear fuel assembly22 Jun 2023US 2023/0197297 A1Kepco Nuclear Fuel Co., Ltd.
- Improved corrosion resistance of additively-manufactured zirconium alloys16 Jun 2022US 2022/0184706 A1Westinghouse Electric Corp.
- Spacer Grid Of Nuclear Fuel Assembly Having Simple Shape Structure15 Apr 2021US 2021/0110941 A1Kepco Nuclear Fuel Co., Ltd.
Most cited
By later US patents
- Laser machining system167US 4,541,055 AWestinghouse Electric Corp. · 1985
- Composite spacer with Inconel grid and Zircaloy band38US 5,089,221 AGeneral Electric Company · 1992
- Laser lens and light assembly32US 4,518,843 AWestinghouse Electric Corp. · 1985
- Calibration of automated laser machining apparatus32US 4,545,018 AWestinghouse Electric Corp. · 1985
- Modified cross point spacer apparatus and construction30US 5,032,351 AGeneral Electric Company · 1991