C22B 3/045
Leaching using electrochemical processes
Official title: {Leaching using electrochemical processes}
C22B3/045 (Leaching using electrochemical processes) appears on 67 US grants and 96 published applications in this corpus.
Search patents in C22B- Granted patents
- 67
- Published applications
- 96
- Assignees
- 85
- Inventors
- 270
- Latest grant
- 21 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 3 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 2 |
| 2004 | 0 | 2 |
| 2005 | 0 | 7 |
| 2006 | 1 | 1 |
| 2007 | 0 | 2 |
| 2008 | 0 | 2 |
| 2009 | 1 | 2 |
| 2010 | 2 | 12 |
| 2011 | 7 | 5 |
| 2012 | 5 | 2 |
| 2013 | 1 | 1 |
| 2014 | 3 | 0 |
| 2015 | 3 | 3 |
| 2016 | 1 | 1 |
| 2017 | 1 | 4 |
| 2018 | 0 | 2 |
| 2019 | 2 | 2 |
| 2020 | 5 | 3 |
| 2021 | 2 | 4 |
| 2022 | 2 | 5 |
| 2023 | 2 | 7 |
| 2024 | 2 | 7 |
| 2025 | 4 | 11 |
| 2026 | 3 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Flexible electrode tube for electrified rare earth mining and application method therefor21 Jul 2026US 12,687,112 B2Guangzhou Institute of Geochemistry, Chinese Academy of Sciences
- Method and electrochemical system for recycling spent lithium-ion battery17 Feb 2026US 12,553,142 B2East China University of Science and Technology
- Method for recovering active metal of lithium secondary battery10 Feb 2026US 12,545,974 B2SK Innovation Co., Ltd.
- Direct electrochemical extraction of lithium from ores4 Nov 2025US 12,460,309 B2The Penn State Research Foundation
- Methods of recovering active materials from rechargeable batteries, and related apparatuses12 Aug 2025US 12,388,123 B2Battelle Energy Alliance, LLC
- Methods employing thiourea for metal extraction10 Sep 2026US 2026/0265857 A1Rzolv Technologies Inc.
- Recovery of energy critical high value metals using functionalized materials23 Jul 2026US 2026/0209979 A1Cornell University
- In situ leach mining using electrical reservoir stimulation18 Jun 2026US 2026/0168369 A1Eden GeoPower, Inc.
- Methods of extracting metals by electrochemical processing of a sulfoarsenide compound21 May 2026US 2026/0139400 A1Battelle Energy Alliance, LLC
- Electrochemical metallurgical slag recycling14 May 2026US 2026/0132484 A1Electrasteel, Inc.
Most cited
By later US patents
- Process for the recovery of plutonium contained in solid waste34US 4,749,519 ACommissariat A L' Energie Atomique · 1988
- Leaching process25US 4,980,134 AAccel Industrial and Mineral Processes Ltd. · 1990
- Electrochemical system and method20US 5,882,502 ARMG Services Pty. Ltd. · 1999
- Dissolution of PuO.sub.2 or NpO.sub.2 using electrolytically regenerated reagents15US 4,686,019 AExxon Research & Engineering Co. · 1987
- Electrochemical reactor for copper removal from barren solutions15US 4,911,804 ACelec Inc. · 1990