G21F 9/301
By fixation in stable solid media
Official title: {by fixation in stable solid media}
G21F9/301 (By fixation in stable solid media) appears on 461 US grants and 226 published applications in this corpus.
Search patents in G21F- Granted patents
- 461
- Published applications
- 226
- Assignees
- 258
- Inventors
- 963
- Latest grant
- 28 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 2 | 0 |
| 1978 | 7 | 0 |
| 1979 | 4 | 0 |
| 1980 | 8 | 0 |
| 1981 | 11 | 0 |
| 1982 | 12 | 0 |
| 1983 | 12 | 0 |
| 1984 | 13 | 0 |
| 1985 | 11 | 0 |
| 1986 | 17 | 0 |
| 1987 | 19 | 0 |
| 1988 | 10 | 0 |
| 1989 | 17 | 0 |
| 1990 | 12 | 0 |
| 1991 | 10 | 0 |
| 1992 | 9 | 0 |
| 1993 | 7 | 0 |
| 1994 | 9 | 0 |
| 1995 | 10 | 0 |
| 1996 | 14 | 0 |
| 1997 | 12 | 0 |
| 1998 | 18 | 0 |
| 1999 | 13 | 0 |
| 2000 | 14 | 0 |
| 2001 | 13 | 2 |
| 2002 | 12 | 10 |
| 2003 | 7 | 2 |
| 2004 | 6 | 8 |
| 2005 | 3 | 7 |
| 2006 | 10 | 9 |
| 2007 | 1 | 4 |
| 2008 | 3 | 10 |
| 2009 | 3 | 3 |
| 2010 | 5 | 8 |
| 2011 | 2 | 10 |
| 2012 | 4 | 7 |
| 2013 | 8 | 18 |
| 2014 | 11 | 10 |
| 2015 | 14 | 11 |
| 2016 | 13 | 13 |
| 2017 | 8 | 8 |
| 2018 | 11 | 14 |
| 2019 | 8 | 9 |
| 2020 | 10 | 10 |
| 2021 | 6 | 11 |
| 2022 | 10 | 9 |
| 2023 | 7 | 5 |
| 2024 | 3 | 10 |
| 2025 | 5 | 7 |
| 2026 | 4 | 11 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Methods and devices for radioactive waste solidification28 Jul 2026US 12,694,999 B1AVANTech, Inc.
- Constructing method for delaying corrosion of radioactive waste disposal container in concrete disposal vault19 May 2026US 12,633,430 B2Korea Radioactive Waste Agency
- Method for dehalogenation and vitrification of radioactive metal halide wastes14 Apr 2026US 12,603,188 B2Wuhan University of Technology
- Hazardous waste disposal using salt6 Jan 2026US 12,518,888 B2Deep Isolation, Inc.
- Methods for extracting radioisotopes from radiologically contaminated waste21 Oct 2025US 12,451,264 B2
- Methods and devices for radioactive waste solidification8 Oct 2026US 2026/0311904 A1AVANTech, Inc.
- Methods of forming radioactive articles and related radioactive articles10 Sep 2026US 2026/0269096 A1Battelle Energy Alliance, LLC
- Radioactive waste supply apparatus27 Aug 2026US 2026/0253757 A1Korea Hydro & Nuclear Power Co., Ltd.
- Glass melt sample collection system13 Aug 2026US 2026/0235476 A1Korea Hydro & Nuclear Power Co., Ltd.
- Method for stabilizing and immobilizing uranium at source via formation of mineral film mediated by microorganisms13 Aug 2026US 2026/0237533 A1
Most cited
By later US patents
- Glass microspheres190US 4,789,501 AThe Curators of the University of Missouri · 1988
- Method for treating mixed radioactive waste111US 5,745,861 AMolten Metal Technology, Inc. · 1998
- Formation grouting method and composition useful therefor101US 5,106,423 AGeochemical Corporation · 1992
- Method and apparatus for hydraulic embedment of waste in subterranean formations85US 5,318,382 A1994
- Radioactive glass microspheres84US 5,011,677 AThe Curators of the University of Missouri · 1991