C25C 1/22
Electrolytic production, recovery or refining of metals by electrolysis of solutions: of
Official title: of metals not provided for in groups C25C1/02 - C25C1/20
C25C1/22 (Electrolytic production, recovery or refining of metals by electrolysis of solutions: of) appears on 101 US grants and 122 published applications in this corpus.
Search patents in C25C- Granted patents
- 101
- Published applications
- 122
- Assignees
- 101
- Inventors
- 383
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 3 | 0 |
| 1978 | 3 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 0 | 2 |
| 2008 | 0 | 0 |
| 2009 | 0 | 4 |
| 2010 | 0 | 6 |
| 2011 | 2 | 4 |
| 2012 | 4 | 3 |
| 2013 | 2 | 10 |
| 2014 | 4 | 8 |
| 2015 | 5 | 10 |
| 2016 | 4 | 8 |
| 2017 | 5 | 8 |
| 2018 | 9 | 4 |
| 2019 | 8 | 5 |
| 2020 | 4 | 2 |
| 2021 | 3 | 6 |
| 2022 | 2 | 11 |
| 2023 | 5 | 10 |
| 2024 | 8 | 6 |
| 2025 | 5 | 9 |
| 2026 | 3 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Selective recovery of rare earth elements from alloys by electrochemical leaching and electrodeposition25 Aug 2026US 12,716,143 B2Battelle Memorial Institute
- Recovery of rare earth metals from ferromagnetic alloys28 Jul 2026US 12,692,612 B2Yeda Research and Development Co. Ltd.
- System and process for sustainable electrowinning of metal16 Jun 2026US 12,655,533 B2Case Western Reserve University
- Methods and apparatus for extracting metals from materials23 Dec 2025US 12,503,784 B2SiTration, Inc.
- Lithium recovery from lithium salts dissolved in ionic liquids11 Nov 2025US 12,467,152 B2The Board of Regents of the Nevada System of Higher Education On Behalf of the University of Nevada, Las Vegas
- Electrolysis equipment28 May 2026US 2026/0146343 A1Industrial Technology Research Institute
- Methods for electrometallizating rare earth elements using anhydrous electrolytes comprising one or more silylamide compounds12 Feb 2026US 2026/0043162 A1Battelle Energy Alliance, LLC
- Lithium recovery from lithium salts dissolved in ionic liquids5 Feb 2026US 2026/0035821 A1Board of Regents of the Nevada System of Higher Education, On Behalf of the
- One-step method for electrokinetic uranium extraction and separation from sandstone-type uranium deposit5 Feb 2026US 2026/0035822 A1Guangzhou Institute of Geochemistry, Chinese Academy of Sciences
- Chemically facilitated electrochemical methods for recovery of rare earth elements15 Jan 2026US 2026/0015748 A1Battelle Energy Alliance, LLC
Most cited
By later US patents
- Electrowinning of gallium29US 3,966,568 ACominco Ltd. · 1976
- Systems and methods for producing metal clusters; functionalized surfaces; and droplets including solvated metal ions17US 9,551,079 B2Purdue Research Foundation · 2017
- Systems and methods for producing metal clusters; functionalized surfaces; and droplets including solvated metal ions17US 9,719,181 B2Purdue Research Foundation · 2017
- Method and apparatus for removing metal from a metal-laden solution14US 4,372,829 A1983
- Process for hydrometallurgic and electrochemical treatment of sulfur antimony ores with production of electrolytic antimony and elemental sulfur14US 5,750,019 AEngitec S.p.A. · 1998