C22B 15/00
Obtaining copper
C22B15/00 (Obtaining copper) appears on 1,362 US grants and 1,160 published applications in this corpus.
Search patents in C22B- Granted patents
- 1,362
- Published applications
- 1,160
- Assignees
- 760
- Inventors
- 3,028
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 53 | 0 |
| 1977 | 58 | 0 |
| 1978 | 45 | 0 |
| 1979 | 24 | 0 |
| 1980 | 23 | 0 |
| 1981 | 22 | 0 |
| 1982 | 32 | 0 |
| 1983 | 21 | 0 |
| 1984 | 23 | 0 |
| 1985 | 17 | 0 |
| 1986 | 24 | 0 |
| 1987 | 25 | 0 |
| 1988 | 9 | 0 |
| 1989 | 16 | 0 |
| 1990 | 6 | 0 |
| 1991 | 6 | 0 |
| 1992 | 12 | 0 |
| 1993 | 16 | 0 |
| 1994 | 20 | 0 |
| 1995 | 18 | 0 |
| 1996 | 12 | 0 |
| 1997 | 18 | 0 |
| 1998 | 18 | 0 |
| 1999 | 26 | 0 |
| 2000 | 14 | 0 |
| 2001 | 30 | 8 |
| 2002 | 22 | 18 |
| 2003 | 23 | 21 |
| 2004 | 24 | 42 |
| 2005 | 18 | 36 |
| 2006 | 12 | 36 |
| 2007 | 16 | 30 |
| 2008 | 13 | 40 |
| 2009 | 32 | 37 |
| 2010 | 34 | 64 |
| 2011 | 26 | 35 |
| 2012 | 42 | 41 |
| 2013 | 35 | 34 |
| 2014 | 35 | 36 |
| 2015 | 29 | 42 |
| 2016 | 28 | 44 |
| 2017 | 30 | 36 |
| 2018 | 37 | 52 |
| 2019 | 35 | 38 |
| 2020 | 48 | 49 |
| 2021 | 28 | 39 |
| 2022 | 23 | 45 |
| 2023 | 40 | 88 |
| 2024 | 53 | 91 |
| 2025 | 53 | 78 |
| 2026 | 38 | 80 |
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.
- Copper-tin-nickel brazing material prepared by alloys recycled from E-waste, preparation method therefor and system thereof15 Sep 2026US 12,735,765 B2Zhengzhou Research Institute of Mechanical Engineering Co., Ltd.
- Method for recovering valuable substance15 Sep 2026US 12,735,767 B2Dowa Eco-System Co., Ltd.
- 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
- 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
- Gas injection device8 Oct 2026US 2026/0308714 A1SMS group GmbH
- 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
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
- Submerged combustion in molten materials69US 4,657,586 AUnion Carbide Corporation · 1987
- Recovery of precious metals from metal sulphides66US 4,070,182 ASherritt Gordon Mines Limited · 1978
- Vertical shaft melting furnace and method of melting65US 4,877,449 AInstitute of Gas Technology · 1989