C02F 1/62
Heavy metal compounds
C02F1/62 (Heavy metal compounds) appears on 286 US grants and 186 published applications in this corpus.
Search patents in C02F- Granted patents
- 286
- Published applications
- 186
- Assignees
- 243
- Inventors
- 691
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 2 | 0 |
| 1978 | 5 | 0 |
| 1979 | 2 | 0 |
| 1980 | 2 | 0 |
| 1981 | 6 | 0 |
| 1982 | 3 | 0 |
| 1983 | 2 | 0 |
| 1984 | 3 | 0 |
| 1985 | 5 | 0 |
| 1986 | 8 | 0 |
| 1987 | 3 | 0 |
| 1988 | 4 | 0 |
| 1989 | 7 | 0 |
| 1990 | 4 | 0 |
| 1991 | 7 | 0 |
| 1992 | 7 | 0 |
| 1993 | 5 | 0 |
| 1994 | 4 | 0 |
| 1995 | 10 | 0 |
| 1996 | 11 | 0 |
| 1997 | 9 | 0 |
| 1998 | 7 | 0 |
| 1999 | 7 | 0 |
| 2000 | 9 | 0 |
| 2001 | 6 | 3 |
| 2002 | 12 | 5 |
| 2003 | 5 | 4 |
| 2004 | 5 | 7 |
| 2005 | 4 | 5 |
| 2006 | 4 | 1 |
| 2007 | 6 | 3 |
| 2008 | 2 | 4 |
| 2009 | 0 | 1 |
| 2010 | 4 | 5 |
| 2011 | 1 | 3 |
| 2012 | 1 | 1 |
| 2013 | 2 | 14 |
| 2014 | 7 | 14 |
| 2015 | 4 | 5 |
| 2016 | 5 | 3 |
| 2017 | 11 | 3 |
| 2018 | 2 | 8 |
| 2019 | 3 | 8 |
| 2020 | 8 | 9 |
| 2021 | 7 | 18 |
| 2022 | 11 | 11 |
| 2023 | 6 | 19 |
| 2024 | 14 | 15 |
| 2025 | 15 | 15 |
| 2026 | 6 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Apparatus and methods for methyl mercury detection and capture22 Sep 2026US 12,741,891 B2The Regents of the University of California
- Recycling system4 Aug 2026US 12,698,223 B2BYD Company Limited
- System and method for low-temperature treatment of heavy metals and dioxins in fly ash7 Jul 2026US 12,673,352 B2Zhejiang University
- Process for recovering lithium from brines28 Apr 2026US 12,612,901 B2Terralithium LLC
- Use of trivalent metals to enhance aquatic pesticide efficacy, surface water, and sediment quality while minimizing risk to aquatic biota17 Feb 2026US 12,552,694 B2SePRO Corporation
- Additive combination for treatment of heavy metals and dioxins in fly ash1 Oct 2026US 2026/0295645 A1Zhejiang University
- Bioremediation systems for wastewater treatment and methods for the use thereof7 May 2026US 2026/0125301 A1Cemvita Factory, Inc.
- Transition metal sulfide adsorbent and its preparation method and application27 Nov 2025US 2025/0360483 A1Jinggangshan University
- Recirculating aquaculture system and method13 Nov 2025US 2025/0344680 A1
- Method for adsorbing of heavy metal ions using a magnetic ionic liquid adsorbent13 Nov 2025US 2025/0346502 A1King Fahd University of Petroleum and Minerals
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
- Process for the treatment of metal-containing water and recovery of metals therefrom81US 5,505,857 ABoard of Regents of the University and Community College System of Nevada on behalf of the University of Nevada · 1996
- Treating means for bodies of water66US 4,308,138 A1981
- Electrochemical deionization63US 5,584,981 AUnited Kingdom Atomic Energy Authority · 1996
- Hg removal from wastewater by regenerative adsorption62US 5,080,799 AMobil Oil Corporation · 1992