C22B 19/22
With leaching with acids
Official title: {with leaching with acids}
C22B19/22 (With leaching with acids) appears on 156 US grants and 81 published applications in this corpus.
Search patents in C22B- Granted patents
- 156
- Published applications
- 81
- Assignees
- 125
- Inventors
- 366
- Latest grant
- 12 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 2 | 0 |
| 1978 | 5 | 0 |
| 1979 | 6 | 0 |
| 1980 | 3 | 0 |
| 1981 | 5 | 0 |
| 1982 | 7 | 0 |
| 1983 | 5 | 0 |
| 1984 | 6 | 0 |
| 1985 | 5 | 0 |
| 1986 | 7 | 0 |
| 1987 | 4 | 0 |
| 1988 | 3 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 8 | 0 |
| 1996 | 3 | 0 |
| 1997 | 4 | 0 |
| 1998 | 2 | 0 |
| 1999 | 6 | 0 |
| 2000 | 3 | 0 |
| 2001 | 1 | 0 |
| 2002 | 6 | 5 |
| 2003 | 0 | 3 |
| 2004 | 5 | 4 |
| 2005 | 4 | 3 |
| 2006 | 0 | 3 |
| 2007 | 0 | 4 |
| 2008 | 2 | 1 |
| 2009 | 3 | 1 |
| 2010 | 2 | 2 |
| 2011 | 2 | 2 |
| 2012 | 1 | 2 |
| 2013 | 1 | 3 |
| 2014 | 1 | 2 |
| 2015 | 1 | 3 |
| 2016 | 3 | 6 |
| 2017 | 3 | 3 |
| 2018 | 5 | 0 |
| 2019 | 2 | 3 |
| 2020 | 4 | 4 |
| 2021 | 3 | 6 |
| 2022 | 3 | 1 |
| 2023 | 3 | 5 |
| 2024 | 4 | 6 |
| 2025 | 1 | 4 |
| 2026 | 1 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- System and method for recovering constituents from batteries12 May 2026US 12,626,931 B2Environmental 360 Solutions Ltd.
- Process for the recovery of zinc from zinc-bearing raw materials15 Apr 2025US 12,276,007 B2Tecnicas Reunidas S. A.
- Process for recovering non-ferrous metals from industrial mineral residues3 Dec 2024US 12,157,928 B2Vito NV
- Process for recovering components from alkaline batteries22 Oct 2024US 12,125,996 B2Fortum Oyj
- Method for the treatment of iron-containing sludge6 Aug 2024US 12,054,804 B2ArcelorMittal
- Method for the Separation of Zinc and Iron from Electric Arc Furnace Baghouse Dust6 Aug 2026US 2026/0225092 A1American Renewable Metals LLC
- Method of preparing zinc-containing material, method of preparing electrogalvanizing bath, and method of producing electrogalvanized steel sheet30 Jul 2026US 2026/0218332 A1Jfe Steel Corporation
- Methods of extracting metals by electrochemical processing of a sulfoarsenide compound21 May 2026US 2026/0139400 A1Battelle Energy Alliance, LLC
- Method for producing nickel sulfate26 Feb 2026US 2026/0055007 A1SK Innovation Co., Ltd.
- Process and system for recovering copper and cobalt from sulfidic materials5 Feb 2026US 2026/0035766 A1Capstone Copper Corp., d/b/a Capstone Copper
Most cited
By later US patents
- Chloride assisted hydrometallurgical copper extraction52US 5,431,788 ACominco Engineering Services Ltd. · 1995
- Chloride assisted hydrometallurgical extraction of metal42US 5,902,474 ACominco Engineering Services Ltd. · 1999
- Metal sulphide extraction36US 4,378,275 ASaudi-Sudanese Red Sea Joint Commission · 1983
- Chloride assisted hydrometallurgical extraction of metal34US 5,869,012 ACominco Engineering Services Ltd. · 1999
- Chloride assisted hydrometallurgical extraction of metal33US 5,650,057 ACominco Engineering Services Ltd. · 1997