C22B 15/0063
Hydrometallurgy
Official title: {Hydrometallurgy}
C22B15/0063 (Hydrometallurgy) appears on 839 US grants and 761 published applications in this corpus.
Search patents in C22B- Granted patents
- 839
- Published applications
- 761
- Assignees
- 516
- Inventors
- 1,839
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 40 | 0 |
| 1977 | 34 | 0 |
| 1978 | 32 | 0 |
| 1979 | 18 | 0 |
| 1980 | 13 | 0 |
| 1981 | 13 | 0 |
| 1982 | 14 | 0 |
| 1983 | 13 | 0 |
| 1984 | 9 | 0 |
| 1985 | 7 | 0 |
| 1986 | 13 | 0 |
| 1987 | 8 | 0 |
| 1988 | 1 | 0 |
| 1989 | 5 | 0 |
| 1990 | 3 | 0 |
| 1991 | 2 | 0 |
| 1992 | 7 | 0 |
| 1993 | 6 | 0 |
| 1994 | 12 | 0 |
| 1995 | 10 | 0 |
| 1996 | 9 | 0 |
| 1997 | 11 | 0 |
| 1998 | 14 | 0 |
| 1999 | 17 | 0 |
| 2000 | 9 | 0 |
| 2001 | 18 | 5 |
| 2002 | 16 | 13 |
| 2003 | 15 | 15 |
| 2004 | 15 | 30 |
| 2005 | 10 | 28 |
| 2006 | 9 | 27 |
| 2007 | 10 | 16 |
| 2008 | 12 | 32 |
| 2009 | 24 | 24 |
| 2010 | 24 | 37 |
| 2011 | 17 | 20 |
| 2012 | 23 | 24 |
| 2013 | 27 | 19 |
| 2014 | 20 | 26 |
| 2015 | 15 | 25 |
| 2016 | 20 | 30 |
| 2017 | 16 | 26 |
| 2018 | 24 | 28 |
| 2019 | 22 | 28 |
| 2020 | 32 | 37 |
| 2021 | 22 | 22 |
| 2022 | 17 | 27 |
| 2023 | 19 | 45 |
| 2024 | 35 | 64 |
| 2025 | 30 | 56 |
| 2026 | 27 | 57 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Integrated recovery of metals from complex substrates22 Sep 2026US 12,742,224 B2Yava International Inc.
- 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
- Solvent free copper extraction18 Aug 2026US 12,709,784 B2GreenSource Fabrication LLC
- Systems and methods for improved metal recovery by leaching8 Oct 2026US 2026/0308711 A1Freeport Minerals Corporation
- Systems and methods for improved metal recovery by leaching8 Oct 2026US 2026/0308712 A1Freeport Minerals Corporation
- Mining chemical collector compositions and processes for recovering metal from ore1 Oct 2026US 2026/0295598 A1Chevron Phillips Chemical Company LP
- 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
Most cited
By later US patents
- Metal nanocrystals and synthesis thereof117US 6,645,444 B2Nanospin Solutions · 2003
- Processes and intermediates for preparing anti-cancer compounds70US 6,476,040 B1Pfizer Inc. · 2002
- Recovery of precious metals from metal sulphides66US 4,070,182 ASherritt Gordon Mines Limited · 1978
- 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