C22B 15/008
With non-acid solutions containing salts of alkali or alkaline earth metals
Official title: {with non-acid solutions containing salts of alkali or alkaline earth metals}
C22B15/008 (With non-acid solutions containing salts of alkali or alkaline earth metals) appears on 19 US grants and 18 published applications in this corpus.
Search patents in C22B- Granted patents
- 19
- Published applications
- 18
- Assignees
- 27
- Inventors
- 67
- Latest grant
- 7 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 1 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 3 |
| 2017 | 1 | 1 |
| 2018 | 1 | 1 |
| 2019 | 1 | 1 |
| 2020 | 2 | 0 |
| 2021 | 0 | 1 |
| 2022 | 0 | 1 |
| 2023 | 1 | 3 |
| 2024 | 1 | 3 |
| 2025 | 3 | 2 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Alkaline oxidation methods and systems for recovery of metals from ores7 Apr 2026US 12,595,529 B2Alderley Gold Corp.
- Sulphide oxidation in leaching of minerals25 Nov 2025US 12,480,178 B2Glencore Technology Pty Limited
- Processes and systems for purifying and recycling lithium-ion battery waste streams13 May 2025US 12,297,520 B2Green Li-Ion Pte. Ltd.
- Method for removing arsenic from copper smelting soot and comprehensive recovery of valuable metals4 Feb 2025US 12,215,406 B1Shandong Humon Smelting Co., Ltd.
- Alkaline oxidation methods and systems for recovery of metals from ores28 May 2024US 11,993,826 B2Hycroft Mining Holding Corporation
- Alkaline Oxidation Methods and Systems for Recovery of Metals from Ores2 Jul 2026US 2026/0185181 A1Alderley Gold Corp.
- Environmentally-friendly surfactants for mineral beneficiation11 Dec 2025US 2025/0375776 A1Colonial Chemical Inc.
- System and method for recovering metal from battery materials20 Mar 2025US 2025/0096344 A1Li-Cycle Corp.
- Alkaline Oxidation Methods and Systems for Recovery of Metals from Ores19 Dec 2024US 2024/0417822 A1Alderley Gold Corp.
- Sequential treatment process for the heap leaching of primary and secondary copper sulphides22 Aug 2024US 2024/0279770 A1Corporacion Nacional del Cobre de Chile
Most cited
By later US patents
- Selective leaching of chloride from copper oxide minerals10US 4,292,281 AThe Hanna Mining Company · 1981
- Chemical reducing solution for copper oxide10US 5,736,065 AHitachi Chemical Company, Ltd. · 1998
- Recovery of silver from cuprous chloride solutions by amalgamation5US 4,124,379 ACyprus Metallurgical Processes Corporation · 1978
- Process for copper and/or precious metal recovery3US 10,480,046 B2Curtin University of Technology · 2019
- Alkaline oxidation methods and systems for recovery of metals from ores3US 11,993,826 B2Hycroft Mining Holding Corporation · 2024