G21F 9/00
Treating radioactively contaminated material
Official title: Treating radioactively contaminated material; Decontamination arrangements therefor
G21F9/00 (Treating radioactively contaminated material) appears on 2,828 US grants and 1,577 published applications in this corpus.
Search patents in G21F- Granted patents
- 2,828
- Published applications
- 1,577
- Assignees
- 1,154
- Inventors
- 5,766
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 46 | 0 |
| 1977 | 49 | 0 |
| 1978 | 44 | 0 |
| 1979 | 36 | 0 |
| 1980 | 53 | 0 |
| 1981 | 78 | 0 |
| 1982 | 55 | 0 |
| 1983 | 51 | 0 |
| 1984 | 83 | 0 |
| 1985 | 52 | 0 |
| 1986 | 68 | 0 |
| 1987 | 88 | 0 |
| 1988 | 69 | 0 |
| 1989 | 95 | 0 |
| 1990 | 78 | 0 |
| 1991 | 59 | 0 |
| 1992 | 72 | 0 |
| 1993 | 53 | 0 |
| 1994 | 68 | 0 |
| 1995 | 56 | 0 |
| 1996 | 61 | 0 |
| 1997 | 78 | 0 |
| 1998 | 74 | 0 |
| 1999 | 66 | 0 |
| 2000 | 55 | 0 |
| 2001 | 55 | 10 |
| 2002 | 53 | 42 |
| 2003 | 41 | 33 |
| 2004 | 29 | 42 |
| 2005 | 19 | 35 |
| 2006 | 43 | 47 |
| 2007 | 19 | 31 |
| 2008 | 21 | 45 |
| 2009 | 26 | 47 |
| 2010 | 43 | 57 |
| 2011 | 26 | 58 |
| 2012 | 30 | 54 |
| 2013 | 55 | 84 |
| 2014 | 64 | 87 |
| 2015 | 69 | 84 |
| 2016 | 72 | 94 |
| 2017 | 69 | 72 |
| 2018 | 56 | 84 |
| 2019 | 73 | 80 |
| 2020 | 64 | 74 |
| 2021 | 53 | 94 |
| 2022 | 83 | 78 |
| 2023 | 52 | 68 |
| 2024 | 41 | 78 |
| 2025 | 49 | 49 |
| 2026 | 36 | 50 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- G21F 9/04Treating liquids1,368
- G21F 9/28Treating solids1,365
- G21F 9/001Decontamination of contaminated objects, apparatus, clothes, food346
- G21F 9/02Treating gases269
- G21F 9/008Apparatus specially adapted for mixing or disposing radioactively contamined material81
- G21F 9/007Recovery of isotopes from radioactive waste75
Recent patents
- UV reaction apparatus for treating waste liquid caused by system decontamination in nuclear power plant18 Aug 2026US 12,709,556 B2Korea Hydro & Nuclear Power Co., Ltd.
- Monitoring a hazardous waste repository11 Aug 2026US 12,703,017 B2Deep Isolation, Inc.
- Radiation monitoring systems, radioactive material storage systems and associated components and methods4 Aug 2026US 12,700,516 B2Battelle Energy Alliance, LLC
- Methods and devices for radioactive waste solidification28 Jul 2026US 12,694,999 B1AVANTech, Inc.
- Layered absorbent substrate incorporating activated carbon and superabsorbent materials7 Jul 2026US 12,673,229 B2Star Liberty LLC
- Methods and devices for radioactive waste solidification8 Oct 2026US 2026/0311904 A1AVANTech, Inc.
- Laser ablation decontamination system and method of using same1 Oct 2026US 2026/0301983 A1
- Packaging System for Radioactive Waste1 Oct 2026US 2026/0301984 A1PacTec, Inc.
- Enhanced oxidative decladding technology for recovery of used nuclear fuel24 Sep 2026US 2026/0290639 A1Curio Solutions LLC
- Materials and methods for iodine capture24 Sep 2026US 2026/0290827 A1University of Houston System
Most cited
By later US patents
- Method of handling radioactive alkali metal waste490US 4,234,449 AThe United States of America as represented by the United States Department of Energy · 1980
- Method for disposing of waste materials232US 4,428,700 AE. R. Johnson Associates, Inc. · 1984
- Glass microspheres190US 4,789,501 AThe Curators of the University of Missouri · 1988
- Apparatus and method for subterranean injection of slurried wastes139US 6,002,063 ATerralog Technologies Inc. · 1999
- Transport container for hazardous material135US 7,775,388 B2Quest Diagnostics Investments Incorporated · 2010