C22B 15/0067
With acids or salts thereof
Official title: {with acids or salts thereof}
C22B15/0067 (With acids or salts thereof) appears on 499 US grants and 459 published applications in this corpus.
Search patents in C22B- Granted patents
- 499
- Published applications
- 459
- Assignees
- 303
- Inventors
- 1,117
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 21 | 0 |
| 1977 | 18 | 0 |
| 1978 | 25 | 0 |
| 1979 | 13 | 0 |
| 1980 | 8 | 0 |
| 1981 | 5 | 0 |
| 1982 | 9 | 0 |
| 1983 | 7 | 0 |
| 1984 | 6 | 0 |
| 1985 | 4 | 0 |
| 1986 | 9 | 0 |
| 1987 | 4 | 0 |
| 1988 | 0 | 0 |
| 1989 | 4 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 4 | 0 |
| 1994 | 6 | 0 |
| 1995 | 5 | 0 |
| 1996 | 7 | 0 |
| 1997 | 8 | 0 |
| 1998 | 4 | 0 |
| 1999 | 13 | 0 |
| 2000 | 5 | 0 |
| 2001 | 13 | 2 |
| 2002 | 10 | 8 |
| 2003 | 8 | 8 |
| 2004 | 6 | 18 |
| 2005 | 7 | 19 |
| 2006 | 4 | 16 |
| 2007 | 6 | 8 |
| 2008 | 8 | 17 |
| 2009 | 18 | 21 |
| 2010 | 20 | 20 |
| 2011 | 10 | 11 |
| 2012 | 13 | 12 |
| 2013 | 13 | 9 |
| 2014 | 8 | 4 |
| 2015 | 6 | 11 |
| 2016 | 9 | 17 |
| 2017 | 7 | 17 |
| 2018 | 10 | 12 |
| 2019 | 7 | 18 |
| 2020 | 25 | 26 |
| 2021 | 11 | 13 |
| 2022 | 11 | 22 |
| 2023 | 15 | 31 |
| 2024 | 24 | 43 |
| 2025 | 24 | 38 |
| 2026 | 17 | 38 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Binder for an agglomeration process8 Sep 2026US 12,729,161 B2Mintek
- System and method for activating deep raffinate injection based on ore placement8 Sep 2026US 12,731,086 B2Freeport Minerals Corporation
- Acid impacts on a leach stockpile8 Sep 2026US 12,731,087 B2Freeport Minerals Corporation
- Processing method21 Jul 2026US 12,686,902 B2Rio Tinto Technological Resources Inc.
- System and method for adjusting leaching operations based on leach analytic data7 Jul 2026US 12,675,750 B2Freeport Minerals Corporation
- Acid impacts on a leach stockpile1 Oct 2026US 2026/0300850 A1Freeport Minerals Corporation
- Recovery of lithium from black mass24 Sep 2026US 2026/0285700 A1Metso Finland Oy
- System and method for adjusting leaching operations based on leach analytic data24 Sep 2026US 2026/0289438 A1Freeport Minerals Corporation
- System and method for activating deep raffinate injection based on ore placement24 Sep 2026US 2026/0289439 A1Freeport Minerals Corporation
- Heap leaching of copper sulphide ores10 Sep 2026US 2026/0265862 A1Mintek
Most cited
By later US patents
- Processes and intermediates for preparing anti-cancer compounds70US 6,476,040 B1Pfizer Inc. · 2002
- Hydrometallurgical process for the treatment of copper-bearing ore59US 5,356,457 ACorporacion Nacional del Cobre de Chile · 1994
- Recovery of copper values from copper ores56US 6,319,389 B1Hydromet Systems, L.L.C. · 2001
- Hydrometallurgical process for extracting copper from chalcopyrite or bornite concentrates52US 3,949,051 A1976
- Chloride assisted hydrometallurgical copper extraction52US 5,431,788 ACominco Engineering Services Ltd. · 1995