G21F 9/304
Cement or cement-like matrix
Official title: {Cement or cement-like matrix (compositional aspects C04B)}
G21F9/304 (Cement or cement-like matrix) appears on 92 US grants and 54 published applications in this corpus.
Search patents in G21F- Granted patents
- 92
- Published applications
- 54
- Assignees
- 66
- Inventors
- 238
- Latest grant
- 28 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 4 | 0 |
| 1986 | 0 | 0 |
| 1987 | 4 | 0 |
| 1988 | 0 | 0 |
| 1989 | 3 | 0 |
| 1990 | 4 | 0 |
| 1991 | 4 | 0 |
| 1992 | 7 | 0 |
| 1993 | 4 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 5 | 0 |
| 1997 | 0 | 0 |
| 1998 | 5 | 0 |
| 1999 | 2 | 0 |
| 2000 | 5 | 0 |
| 2001 | 3 | 0 |
| 2002 | 2 | 1 |
| 2003 | 2 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 2 |
| 2006 | 0 | 5 |
| 2007 | 0 | 2 |
| 2008 | 1 | 4 |
| 2009 | 1 | 2 |
| 2010 | 2 | 1 |
| 2011 | 1 | 1 |
| 2012 | 0 | 0 |
| 2013 | 2 | 3 |
| 2014 | 1 | 1 |
| 2015 | 0 | 1 |
| 2016 | 2 | 1 |
| 2017 | 1 | 1 |
| 2018 | 2 | 4 |
| 2019 | 0 | 1 |
| 2020 | 5 | 5 |
| 2021 | 1 | 4 |
| 2022 | 3 | 4 |
| 2023 | 1 | 1 |
| 2024 | 1 | 5 |
| 2025 | 2 | 2 |
| 2026 | 3 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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
- Hazardous waste disposal using salt6 Jan 2026US 12,518,888 B2Deep Isolation, Inc.
- Dismantling and decontamination system and method of bioprotective concrete of PWR type nuclear power plant7 Oct 2025US 12,437,892 B2Korea Hydro & Nuclear Power Co., Ltd.
- Systems and methods for low level waste disposal13 May 2025US 12,300,400 B2
- Methods and devices for radioactive waste solidification8 Oct 2026US 2026/0311904 A1AVANTech, Inc.
- Magnesia cement for the solidification of aqueous waste2 Apr 2026US 2026/0094735 A1Battelle Savannah River Alliance, LLC
- Dismantling and decontamination system and method of bioprotective concrete of pwr type nuclear power plant27 Nov 2025US 2025/0364149 A1Korea Hydro & Nuclear Power Co., Ltd.
- Paddle discarding fully-sealed cement stirring and solidification bucket and liquid injection and stirring method24 Jul 2025US 2025/0235832 A1China National Nuclear Corporation Sichuan Environmental Protection Engineering Co., Ltd.
- System and method to stabilize radioactive isotopes4 Jul 2024US 2024/0221967 A1
Most cited
By later US patents
- Formation grouting method and composition useful therefor101US 5,106,423 AGeochemical Corporation · 1992
- Engineered cementitious contaminant barriers and their method of manufacture68US 5,169,566 AE. Khashoggi Industries · 1992
- Method of grouting formations and composition useful therefor54US 5,026,215 AGeochemical Corporation · 1991
- Fixation and stabilization of lead in contaminated soil and solid waste50US 5,193,936 AMAECORP Incorporated · 1993
- Process for treatment of waste39US 4,404,105 ASociete Internationale de Publicite et d'Agences Commerciales · 1983