C22B 43/00
Obtaining mercury
C22B43/00 (Obtaining mercury) appears on 206 US grants and 84 published applications in this corpus.
Search patents in C22B- Granted patents
- 206
- Published applications
- 84
- Assignees
- 159
- Inventors
- 366
- Latest grant
- 30 Sep 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 6 | 0 |
| 1978 | 7 | 0 |
| 1979 | 5 | 0 |
| 1980 | 4 | 0 |
| 1981 | 4 | 0 |
| 1982 | 6 | 0 |
| 1983 | 3 | 0 |
| 1984 | 3 | 0 |
| 1985 | 1 | 0 |
| 1986 | 5 | 0 |
| 1987 | 3 | 0 |
| 1988 | 4 | 0 |
| 1989 | 3 | 0 |
| 1990 | 1 | 0 |
| 1991 | 6 | 0 |
| 1992 | 3 | 0 |
| 1993 | 10 | 0 |
| 1994 | 5 | 0 |
| 1995 | 4 | 0 |
| 1996 | 9 | 0 |
| 1997 | 6 | 0 |
| 1998 | 6 | 0 |
| 1999 | 9 | 0 |
| 2000 | 3 | 0 |
| 2001 | 7 | 0 |
| 2002 | 2 | 7 |
| 2003 | 8 | 3 |
| 2004 | 1 | 6 |
| 2005 | 6 | 3 |
| 2006 | 3 | 8 |
| 2007 | 3 | 3 |
| 2008 | 3 | 2 |
| 2009 | 7 | 9 |
| 2010 | 5 | 7 |
| 2011 | 5 | 4 |
| 2012 | 3 | 5 |
| 2013 | 5 | 2 |
| 2014 | 3 | 0 |
| 2015 | 3 | 3 |
| 2016 | 3 | 3 |
| 2017 | 1 | 3 |
| 2018 | 3 | 4 |
| 2019 | 2 | 1 |
| 2020 | 3 | 2 |
| 2021 | 3 | 0 |
| 2022 | 2 | 3 |
| 2023 | 1 | 1 |
| 2024 | 1 | 4 |
| 2025 | 1 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Process of extraction of metals from a wet mass of waste30 Sep 2025US 12,428,703 B2Hbi S.R.L.
- Pyro-metallurgical process in a rotary kiln25 Jun 2024US 12,018,345 B2S. A. Lhoist Recherche et Developpement
- Renewable mercury meniscus electrode with mercury circulation system and contaminant removal7 Nov 2023US 11,808,728 B2AMS Trace Metals, Inc.
- Molecularly imprinted polymer beads for extraction of lithium, mercury, and scandium19 Jul 2022US 11,389,782 B26th Wave Innovations Corp.
- Method of separating mercury from an ore leachate14 Jun 2022US 11,359,261 B2Ecolab USA Inc.
- Process for separating rare-earth metals in admixture in aqueous solution4 Dec 2025US 2025/0369074 A1Snf S.A.S.
- Carbon oxidizer, carbon burner apparatus for use with same, and associated mercury recovery method16 May 2024US 2024/0157292 A1Just Refiners (USA) Inc.
- In-situ enrichment and analytical method for the hg(ii) isotope in aqueous phase28 Mar 2024US 2024/0100479 A1Institute of Geochemistry, Chinese Academy of Sciences
- Direct leaching from sulfidic refractory ores or concentrates4 Jan 2024US 2024/0002971 A1Arizona Board of Arizona on Behalf of the University of Arizona
- Leaching of precious and chalcophile metals4 Jan 2024US 2024/0002972 A1Mining and Process Solutions Pty Ltd
Most cited
By later US patents
- Process for removing mercury from a gas136US 4,196,173 AAkzo NVV. · 1980
- Removal of mercury from a combustion gas stream and apparatus132US 5,607,496 ABrooks Rand Inc · 1997
- System and process for removal of pollutants from a gas stream101US 6,610,263 B2EnviroScrub Technologies Corporation · 2003
- Process for removal of mercury vapor from waste gases88US 4,273,747 AA/S Niro Atomizer · 1981
- Method for the removal of elemental mercury from a gas stream82US 5,900,042 AThe United States of America as represented by the United States Department of Energy · 1999