C22B 15/0089
By chemical methods
Official title: {by chemical methods}
C22B15/0089 (By chemical methods) appears on 334 US grants and 251 published applications in this corpus.
Search patents in C22B- Granted patents
- 334
- Published applications
- 251
- Assignees
- 227
- Inventors
- 774
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 28 | 0 |
| 1977 | 21 | 0 |
| 1978 | 17 | 0 |
| 1979 | 14 | 0 |
| 1980 | 9 | 0 |
| 1981 | 10 | 0 |
| 1982 | 9 | 0 |
| 1983 | 7 | 0 |
| 1984 | 5 | 0 |
| 1985 | 5 | 0 |
| 1986 | 5 | 0 |
| 1987 | 4 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 3 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 7 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 2 |
| 2002 | 9 | 5 |
| 2003 | 7 | 9 |
| 2004 | 7 | 10 |
| 2005 | 5 | 8 |
| 2006 | 5 | 11 |
| 2007 | 3 | 9 |
| 2008 | 3 | 8 |
| 2009 | 13 | 13 |
| 2010 | 6 | 16 |
| 2011 | 7 | 10 |
| 2012 | 9 | 12 |
| 2013 | 14 | 7 |
| 2014 | 11 | 12 |
| 2015 | 9 | 7 |
| 2016 | 8 | 5 |
| 2017 | 5 | 6 |
| 2018 | 4 | 5 |
| 2019 | 6 | 2 |
| 2020 | 10 | 15 |
| 2021 | 3 | 9 |
| 2022 | 2 | 4 |
| 2023 | 5 | 14 |
| 2024 | 10 | 23 |
| 2025 | 7 | 18 |
| 2026 | 6 | 11 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Solvent free copper extraction18 Aug 2026US 12,709,784 B2GreenSource Fabrication LLC
- Method for removing elemental copper from ternary battery waste and application thereof14 Jul 2026US 12,683,208 B2Guangdong Brunp Recycling Technology Co., Ltd.
- Method for recovering valuable materials from batteries7 Jul 2026US 12,676,351 B2University of Kentucky Research Foundation
- Real-time monitoring system and method for copper-arsenic sulfidation separation in copper electrolyte purification process19 May 2026US 12,630,899 B2Tongji University
- Ammonium complex system-based method for separating and purifying lead, zinc, cadmium, and copper31 Mar 2026US 12,590,352 B2GreenNovo Environmental Technology Co., Ltd
- 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
- Recovery of energy critical high value metals using functionalized materials23 Jul 2026US 2026/0209979 A1Cornell University
- Method for treating an electronic waste and recovering valuable metals and rare earth elements therefrom23 Jul 2026US 2026/0213292 A1Institut National De La Recherche Scientifique
Most cited
By later US patents
- Process for the recovery of hydrogen-reduced metals, ions and the like at porous hydrophobic catalytic barriers51US 4,331,520 APrototech Company · 1982
- Hydrometallurgical treatment of copper-bearing hematite residue42US 4,338,168 ANoranda Mines Limited · 1982
- Chloride assisted hydrometallurgical extraction of metal42US 5,902,474 ACominco Engineering Services Ltd. · 1999
- Method of recovering hydrogen-reduced metals, ions and the like at porous catalytic barriers and apparatus therefor41US 4,422,911 APrototech Company · 1983
- Method for removing soluble selenium from acidic waste water38US 3,933,635 AThe United States of America as represented by the Secretary of the Interior · 1976