C02F 1/64
Of iron or manganese
Official title: of iron or manganese
C02F1/64 (Of iron or manganese) appears on 128 US grants and 57 published applications in this corpus.
Search patents in C02F- Granted patents
- 128
- Published applications
- 57
- Assignees
- 97
- Inventors
- 265
- Latest grant
- 4 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 3 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 6 | 0 |
| 1982 | 3 | 0 |
| 1983 | 1 | 0 |
| 1984 | 3 | 0 |
| 1985 | 5 | 0 |
| 1986 | 6 | 0 |
| 1987 | 2 | 0 |
| 1988 | 3 | 0 |
| 1989 | 6 | 0 |
| 1990 | 3 | 0 |
| 1991 | 4 | 0 |
| 1992 | 4 | 0 |
| 1993 | 4 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 5 | 0 |
| 1997 | 2 | 0 |
| 1998 | 4 | 0 |
| 1999 | 3 | 0 |
| 2000 | 6 | 0 |
| 2001 | 1 | 2 |
| 2002 | 6 | 2 |
| 2003 | 1 | 2 |
| 2004 | 4 | 6 |
| 2005 | 1 | 3 |
| 2006 | 2 | 0 |
| 2007 | 3 | 2 |
| 2008 | 1 | 3 |
| 2009 | 0 | 1 |
| 2010 | 3 | 0 |
| 2011 | 1 | 1 |
| 2012 | 1 | 0 |
| 2013 | 0 | 6 |
| 2014 | 1 | 5 |
| 2015 | 0 | 2 |
| 2016 | 2 | 1 |
| 2017 | 7 | 0 |
| 2018 | 0 | 2 |
| 2019 | 0 | 0 |
| 2020 | 1 | 4 |
| 2021 | 4 | 3 |
| 2022 | 3 | 4 |
| 2023 | 1 | 1 |
| 2024 | 0 | 5 |
| 2025 | 2 | 2 |
| 2026 | 2 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Recycling system4 Aug 2026US 12,698,223 B2BYD Company Limited
- Process for recovering lithium from brines28 Apr 2026US 12,612,901 B2Terralithium LLC
- Wastewater treatment process in production of nickel cobalt hydroxide12 Aug 2025US 12,384,709 B2Gem Co., Ltd.
- Regenerable nanoparticle for removing manganese and preparatory and use methods15 Apr 2025US 12,275,656 B2Jiangsu University of Technology
- Process for producing geothermal power, selective removal of silica and iron from brines, and improved injectivity of treated brines28 Nov 2023US 11,828,272 B2Terralithium LLC
- Recirculating aquaculture system and method13 Nov 2025US 2025/0344680 A1
- Wastewater treatment process in production of nickel cobalt hydroxide29 May 2025US 2025/0171342 A1Gem Co., Ltd.
- Produced water treatment for direct injection using mechanically assisted forward osmosis11 Jul 2024US 2024/0228333 A9Saudi Arabian Oil Company
- Process for producing geothermal power, selective removal of silica and iron from brines, and improved injectivity of treated brines11 Jul 2024US 2024/0229777 A1Terralithium LLC
- Produced water treatment for direct injection using mechanically assisted forward osmosis25 Apr 2024US 2024/0132379 A1Saudi Arabian Oil Company
Most cited
By later US patents
- In-situ remediation system and method for contaminated groundwater121US 4,832,122 AThe United States of America as represented by the United States Department of Energy · 1989
- Treating means for bodies of water66US 4,308,138 A1981
- Water/wastewater treatment apparatus61US 4,871,450 ACamp Dresser & McKee · 1989
- Decontamination of sites where organic compound contaminants endanger the water supply57US 4,892,664 AGroundwater Technology, Inc. · 1990
- Insoluble chelating compositions46US 4,626,416 ADevoe-Holbein International, N.V. · 1986