C25C 1/00
Electrolytic production, recovery or refining of metals by electrolysis of solutions
Official title: Electrolytic production, recovery or refining of metals by electrolysis of solutions (C25C5/00 takes precedence)
C25C1/00 (Electrolytic production, recovery or refining of metals by electrolysis of solutions) appears on 1,105 US grants and 1,038 published applications in this corpus.
Search patents in C25C- Granted patents
- 1,105
- Published applications
- 1,038
- Assignees
- 735
- Inventors
- 2,880
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 38 | 0 |
| 1977 | 45 | 0 |
| 1978 | 46 | 0 |
| 1979 | 26 | 0 |
| 1980 | 24 | 0 |
| 1981 | 26 | 0 |
| 1982 | 15 | 0 |
| 1983 | 28 | 0 |
| 1984 | 34 | 0 |
| 1985 | 16 | 0 |
| 1986 | 16 | 0 |
| 1987 | 18 | 0 |
| 1988 | 17 | 0 |
| 1989 | 12 | 0 |
| 1990 | 10 | 0 |
| 1991 | 9 | 0 |
| 1992 | 10 | 0 |
| 1993 | 21 | 0 |
| 1994 | 8 | 0 |
| 1995 | 19 | 0 |
| 1996 | 17 | 0 |
| 1997 | 15 | 0 |
| 1998 | 20 | 0 |
| 1999 | 10 | 0 |
| 2000 | 13 | 0 |
| 2001 | 15 | 3 |
| 2002 | 10 | 4 |
| 2003 | 5 | 12 |
| 2004 | 10 | 12 |
| 2005 | 6 | 9 |
| 2006 | 1 | 18 |
| 2007 | 1 | 13 |
| 2008 | 12 | 17 |
| 2009 | 4 | 23 |
| 2010 | 12 | 37 |
| 2011 | 10 | 27 |
| 2012 | 23 | 27 |
| 2013 | 21 | 45 |
| 2014 | 21 | 44 |
| 2015 | 31 | 52 |
| 2016 | 26 | 58 |
| 2017 | 32 | 60 |
| 2018 | 47 | 62 |
| 2019 | 44 | 38 |
| 2020 | 54 | 47 |
| 2021 | 33 | 35 |
| 2022 | 28 | 63 |
| 2023 | 33 | 80 |
| 2024 | 43 | 89 |
| 2025 | 41 | 94 |
| 2026 | 29 | 69 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- C25C 1/12Electrolytic production, recovery or refining of metals by electrolysis of solutions: of334
- C25C 1/20Electrolytic production, recovery or refining of metals by electrolysis of solutions: of211
- C25C 1/06Or iron group metals, refractory metals or manganese168
- C25C 1/16Electrolytic production, recovery or refining of metals by electrolysis of solutions: of131
- C25C 1/02Electrolytic production, recovery or refining of metals by electrolysis of solutions: of106
- C25C 1/22Electrolytic production, recovery or refining of metals by electrolysis of solutions: of101
- C25C 1/18Electrolytic production, recovery or refining of metals by electrolysis of solutions: of88
- C25C 1/14Electrolytic production, recovery or refining of metals by electrolysis of solutions: of34
All 9 subgroupsShow fewer
Recent patents
- Electrochemical recycling of lithium from lithium-based materials6 Oct 2026US 12,753,523 B2GM Global Technology Operations LLC
- Systems and methods for direct oxide production29 Sep 2026US 12,747,511 B2Aqua Metals Inc.
- Electrolyzer with horizontal cathode29 Sep 2026US 12,747,512 B2Verdeen Chemicals Inc.
- High-selectivity hydrophilic electrode for extracting lithium and preparation method thereof22 Sep 2026US 12,742,250 B2Central South University
- Bipolar electrolyzer22 Sep 2026US 12,742,251 B2Verdeen Chemicals Inc.
- Method and reactor for the production of alkali metal8 Oct 2026US 2026/0308792 A1Electriq-Global Energy Solutions Ltd.
- In situ electrochemical hydrogen peroxide generation for hydrometallurgical lithium-ion battery recycling8 Oct 2026US 2026/0312161 A1The Trustees of Columbia University in the City of New York
- Systems and methods for lithium extraction from aqueous feedstocks1 Oct 2026US 2026/0295534 A1University of Utah Research Foundation
- Process and system for electrolytically producing an iron-bearing product from iron ore particles1 Oct 2026US 2026/0297782 A1Fortescue Future Industries Pty Ltd
- Electrochemical hydrometallurgy for sustainable ironmaking17 Sep 2026US 2026/0275558 A1
Most cited
By later US patents
- Method for electrochemically producing an alkali metal from an aqueous solution135US 6,770,187 B1BASF SE · 2004
- Method and electrode for electrochemical recovery of lithium value from aqueous solution77US 5,198,081 AJapan as represented by Director General of Agency of Industrial Science and Technology · 1993
- Low temperature alkali metal electrolysis77US 6,368,486 B1E. I. Du Pont de Nemours and Company · 2002
- Inorganic perbromide compositions and methods of use thereof61US 5,607,619 AGreat Lakes Chemical Corporation · 1997
- Active metal electrolyzer60US 7,608,178 B2PolyPlus Battery Company · 2009