G21F 9/004
Of metallic surfaces
Official title: {of metallic surfaces}
G21F9/004 (Of metallic surfaces) appears on 134 US grants and 73 published applications in this corpus.
Search patents in G21F- Granted patents
- 134
- Published applications
- 73
- Assignees
- 79
- Inventors
- 311
- Latest grant
- 16 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 4 | 0 |
| 1985 | 3 | 0 |
| 1986 | 5 | 0 |
| 1987 | 11 | 0 |
| 1988 | 2 | 0 |
| 1989 | 5 | 0 |
| 1990 | 4 | 0 |
| 1991 | 5 | 0 |
| 1992 | 6 | 0 |
| 1993 | 3 | 0 |
| 1994 | 3 | 0 |
| 1995 | 3 | 0 |
| 1996 | 5 | 0 |
| 1997 | 1 | 0 |
| 1998 | 5 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 3 | 1 |
| 2002 | 2 | 3 |
| 2003 | 4 | 2 |
| 2004 | 3 | 4 |
| 2005 | 3 | 1 |
| 2006 | 0 | 1 |
| 2007 | 1 | 0 |
| 2008 | 0 | 2 |
| 2009 | 1 | 4 |
| 2010 | 1 | 2 |
| 2011 | 1 | 3 |
| 2012 | 2 | 2 |
| 2013 | 3 | 3 |
| 2014 | 3 | 8 |
| 2015 | 1 | 4 |
| 2016 | 5 | 3 |
| 2017 | 1 | 1 |
| 2018 | 3 | 4 |
| 2019 | 4 | 5 |
| 2020 | 1 | 3 |
| 2021 | 2 | 7 |
| 2022 | 9 | 3 |
| 2023 | 2 | 0 |
| 2024 | 1 | 5 |
| 2025 | 2 | 1 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Chemical decontamination method and chemical decontamination apparatus16 Jun 2026US 12,658,333 B2Hitachi GE Vernova Nuclear Energy, Ltd.
- Methods for recycling metals from the nuclear industry24 Feb 2026US 12,562,291 B2
- Apparatus and method25 Nov 2025US 12,482,577 B2Lead Technologies, Inc.
- Chemical decontamination method and chemical decontamination apparatus22 Apr 2025US 12,283,386 B2Hitachi-GE Nuclear Energy, Ltd.
- Integrated electrochemical nuclear decontamination system28 May 2024US 11,996,593 B1Triad National Security, LLC
- Method and apparatus for removing radionuclides from radioactive metal waste30 Apr 2026US 2026/0120906 A1Doosan Enerbility Co., Ltd.
- Methods for Recycling Metals from the Nuclear Industry21 Aug 2025US 2025/0266180 A1EnergySolutions, LLC
- Method for treating surfaces or gaseous media using a ferromagnetic gel19 Sep 2024US 2024/0307844 A1
- Electrolytic interior surface treatment apparatus13 Jun 2024US 2024/0194364 A1C-Tech Innovation Limited
- Electrochemical surface treatment apparatus23 May 2024US 2024/0170171 A1C-Tech Innovation Limited
Most cited
By later US patents
- Effective dry etching process of actinide oxides and their mixed oxides in CF4/O2/N2 plasma76US 6,699,398 B1Hanyang Hak Won Co., Ltd. · 2004
- Method for the chemical decontamination of nuclear reactor components31US 4,226,640 AKraftwerk Union Aktiengesellschaft · 1980
- Inhibition of deposition of radioactive substances on nuclear power plant components28US 4,828,790 AHitachi, Ltd. · 1989
- Decontamination of metal surfaces in nuclear power reactors26US 4,587,043 AWestinghouse Electric Corp. · 1986
- Method of reducing radioactivity in nuclear plant25US 4,820,473 AHitachi, Ltd. · 1989