C02F 1/705
Reduction by metals
Official title: {Reduction by metals}
C02F1/705 (Reduction by metals) appears on 355 US grants and 356 published applications in this corpus.
Search patents in C02F- Granted patents
- 355
- Published applications
- 356
- Assignees
- 285
- Inventors
- 938
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 3 | 0 |
| 1978 | 3 | 0 |
| 1979 | 3 | 0 |
| 1980 | 2 | 0 |
| 1981 | 3 | 0 |
| 1982 | 1 | 0 |
| 1983 | 3 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 4 | 0 |
| 1992 | 8 | 0 |
| 1993 | 10 | 0 |
| 1994 | 7 | 0 |
| 1995 | 8 | 0 |
| 1996 | 8 | 0 |
| 1997 | 10 | 0 |
| 1998 | 8 | 0 |
| 1999 | 13 | 0 |
| 2000 | 10 | 0 |
| 2001 | 14 | 3 |
| 2002 | 5 | 3 |
| 2003 | 4 | 6 |
| 2004 | 5 | 5 |
| 2005 | 2 | 12 |
| 2006 | 2 | 12 |
| 2007 | 5 | 16 |
| 2008 | 5 | 12 |
| 2009 | 5 | 12 |
| 2010 | 7 | 17 |
| 2011 | 10 | 13 |
| 2012 | 7 | 19 |
| 2013 | 8 | 20 |
| 2014 | 11 | 15 |
| 2015 | 9 | 19 |
| 2016 | 8 | 17 |
| 2017 | 12 | 14 |
| 2018 | 9 | 13 |
| 2019 | 13 | 16 |
| 2020 | 19 | 30 |
| 2021 | 17 | 17 |
| 2022 | 16 | 22 |
| 2023 | 14 | 18 |
| 2024 | 16 | 8 |
| 2025 | 12 | 7 |
| 2026 | 5 | 10 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method and kit for remediation of environments contaminated with halogenated organic compounds15 Sep 2026US 12,734,568 B2Photon Remediation Technology N.V.
- Composite material and method for removing pollutant from polluted water19 May 2026US 12,629,653 B2Beijing University of Chemical Technology
- Water purifier filter and water purifier comprising same31 Mar 2026US 12,590,015 B2LG Electronics Inc.
- System and method of generating hydrogen gas24 Feb 2026US 12,559,401 B2Rtx Bbn Technologies, Inc.
- Reduction of cyanuric acid in a body of recreational water3 Feb 2026US 12,540,091 B1King Technology, Inc.
- Water treatment device and water treatment method24 Sep 2026US 2026/0285718 A1Organo Corporation
- Composite material for remedying soils with contamination of heavy metals and method therefor20 Aug 2026US 2026/0241363 A1Beijing University of Chemical Technology
- Multi purpose contaminant removal from fluid streams25 Jun 2026US 2026/0175191 A1Standard H2, Inc.
- Methods and systems for removing trichloroethane, trichloroethene, and 1,4-dioxane from contaminated water and wastewater28 May 2026US 2026/0145975 A1Arizona Board of Regents on behalf of Arizona State University
- Robust 3d-printed zinc-clay based catalysts for sustainable wastewater treatment30 Apr 2026US 2026/0115707 A1University of Doha for Science & Technology
Most cited
By later US patents
- Self-contained water treatment system152US 5,269,919 A1993
- Method of treating fluids93US 4,642,192 A1987
- Waste water treating process85US 5,098,567 ANishihara Environmental Sanitation Research Corporation Limited · 1992
- Cleaning halogenated contaminants from groundwater78US 5,266,213 A1993
- Method for treating fluids72US 5,135,654 AKDF Fluid Treatment, Inc. · 1992