A62D 3/33
By chemical fixing the harmful substance
Official title: by chemical fixing the harmful substance, e.g. by chelation or complexation
A62D3/33 (By chemical fixing the harmful substance) appears on 314 US grants and 199 published applications in this corpus.
Search patents in A62D- Granted patents
- 314
- Published applications
- 199
- Assignees
- 216
- Inventors
- 648
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 7 | 0 |
| 1989 | 4 | 0 |
| 1990 | 5 | 0 |
| 1991 | 6 | 0 |
| 1992 | 9 | 0 |
| 1993 | 11 | 0 |
| 1994 | 15 | 0 |
| 1995 | 10 | 0 |
| 1996 | 14 | 0 |
| 1997 | 14 | 0 |
| 1998 | 14 | 0 |
| 1999 | 26 | 0 |
| 2000 | 11 | 0 |
| 2001 | 9 | 2 |
| 2002 | 12 | 7 |
| 2003 | 11 | 8 |
| 2004 | 8 | 18 |
| 2005 | 10 | 6 |
| 2006 | 3 | 11 |
| 2007 | 2 | 4 |
| 2008 | 2 | 10 |
| 2009 | 4 | 14 |
| 2010 | 5 | 11 |
| 2011 | 5 | 5 |
| 2012 | 6 | 6 |
| 2013 | 7 | 10 |
| 2014 | 9 | 6 |
| 2015 | 4 | 14 |
| 2016 | 6 | 5 |
| 2017 | 8 | 11 |
| 2018 | 8 | 8 |
| 2019 | 7 | 11 |
| 2020 | 7 | 5 |
| 2021 | 8 | 7 |
| 2022 | 8 | 9 |
| 2023 | 2 | 3 |
| 2024 | 2 | 3 |
| 2025 | 3 | 5 |
| 2026 | 5 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- System and method for pfas contaminated waste polymer solidification6 Oct 2026US 12,752,143 B1AVANTech, Inc.
- Method for modifying a yarn or textile fabric29 Sep 2026US 12,746,425 B2Centre National de la Recherche Scientifique (CNRS)
- Layered absorbent substrate incorporating activated carbon and superabsorbent materials7 Jul 2026US 12,673,229 B2Star Liberty LLC
- Layered absorbent substrate incorporating activated carbon and superabsorbent materials26 May 2026US 12,636,533 B2Star Liberty LLC
- Composites for chemical sequestration decontamination6 Jan 2026US 12,515,192 B2The Government of the United States of America, as represented by the Secretary of the Navy
- Coating for decontamination of toxic chemical compounds30 Oct 2025US 2025/0332461 A1Commissariat A L' Energie Atomique Et Aux Energies Alternatives
- Nanomaterial-based processing of dyes and organic compounds1 May 2025US 2025/0135256 A1Drexel University
- Compositions and processes for remediating environmental contaminants24 Apr 2025US 2025/0128114 A1BROWN UNIVERSITY, A Rohde Island Nonprofit Corporation Formed And Existing Under Legislative Charter
- Removing Toxic Chemicals from Contaminated Surfaces17 Apr 2025US 2025/0121237 A1Guild Associates, Inc.
- Medication disposal apparatus and methods of manufacture and use20 Feb 2025US 2025/0058162 A1Surgical Device Innovations, LLC
Most cited
By later US patents
- Clean up and passivation of mercury in gas liquefaction plants79US 4,764,219 AMobil Oil Corporation · 1988
- Method for reduction of heavy metal leaching from hazardous waste under acidic and nonacidic conditions72US 5,037,479 ARMT, Inc. · 1991
- Method of stabilizing organic waste69US 4,514,307 AConversion Systems, Inc. · 1985
- Immobilization of lead and cadmium in solid residues from the combustion of refuse using lime and phosphate69US 4,737,356 AWheelabrator Environmental Systems, Inc. · 1988
- Process for treating metal-contaminated materials65US 5,245,120 APhysical Sciences, Inc. · 1993