C25C 1/12
Electrolytic production, recovery or refining of metals by electrolysis of solutions: of
Official title: of copper
C25C1/12 (Electrolytic production, recovery or refining of metals by electrolysis of solutions: of) appears on 334 US grants and 358 published applications in this corpus.
Search patents in C25C- Granted patents
- 334
- Published applications
- 358
- Assignees
- 244
- Inventors
- 953
- Latest grant
- 19 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 13 | 0 |
| 1977 | 16 | 0 |
| 1978 | 14 | 0 |
| 1979 | 5 | 0 |
| 1980 | 4 | 0 |
| 1981 | 8 | 0 |
| 1982 | 4 | 0 |
| 1983 | 4 | 0 |
| 1984 | 10 | 0 |
| 1985 | 6 | 0 |
| 1986 | 3 | 0 |
| 1987 | 2 | 0 |
| 1988 | 3 | 0 |
| 1989 | 2 | 0 |
| 1990 | 2 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 3 | 0 |
| 1996 | 7 | 0 |
| 1997 | 6 | 0 |
| 1998 | 8 | 0 |
| 1999 | 4 | 0 |
| 2000 | 5 | 0 |
| 2001 | 6 | 0 |
| 2002 | 3 | 1 |
| 2003 | 2 | 4 |
| 2004 | 4 | 3 |
| 2005 | 3 | 5 |
| 2006 | 0 | 12 |
| 2007 | 0 | 5 |
| 2008 | 9 | 15 |
| 2009 | 2 | 12 |
| 2010 | 12 | 15 |
| 2011 | 4 | 8 |
| 2012 | 14 | 5 |
| 2013 | 7 | 14 |
| 2014 | 3 | 11 |
| 2015 | 5 | 11 |
| 2016 | 7 | 25 |
| 2017 | 10 | 28 |
| 2018 | 15 | 22 |
| 2019 | 20 | 15 |
| 2020 | 19 | 21 |
| 2021 | 15 | 10 |
| 2022 | 8 | 16 |
| 2023 | 4 | 21 |
| 2024 | 11 | 29 |
| 2025 | 13 | 31 |
| 2026 | 5 | 19 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Real-time monitoring system and method for copper-arsenic sulfidation separation in copper electrolyte purification process19 May 2026US 12,630,899 B2Tongji University
- Extraction of copper, gold and other elements from waste materials28 Apr 2026US 12,612,680 B2University of Kentucky Research Foundation
- Ammonium complex system-based method for separating and purifying lead, zinc, cadmium, and copper31 Mar 2026US 12,590,352 B2GreenNovo Environmental Technology Co., Ltd
- Alternating current electrolysis system, and method and device for controlling the same17 Mar 2026US 12,577,694 B2Sungrow Hydrogen Sci. & Tech. Co., Ltd.
- Method of synthesizing a nanocomposite including metal nanoparticles and polyacrylonitrile matrix6 Jan 2026US 12,516,174 B1Prince Sattam Bin Abdulaziz University
- Heap leaching of copper sulphide ores10 Sep 2026US 2026/0265862 A1Mintek
- Cartridge electrode configurations13 Aug 2026US 2026/0234826 A1Electrasteel, Inc.
- Process for leaching copper produced from secondary sources30 Jul 2026US 2026/0218331 A1Glencore Technology Pty Limited
- Catalytic method for progressive ore transformation in copper leaching23 Jul 2026US 2026/0209890 A1Ceibo Inc.
- Processes, Compositions and Kits for Acid Mist Suppression in Electrolytic Metal Refining Processes23 Jul 2026US 2026/0209980 A1W-Tech Technologies Ltd.
Most cited
By later US patents
- Method of gasifying carbonaceous materials50US 4,279,710 AUniversity Patents, Inc. · 1981
- Method of recovering hydrogen-reduced metals, ions and the like at porous catalytic barriers and apparatus therefor41US 4,422,911 APrototech Company · 1983
- Clean process of recovering metals from waste lithium ion batteries40US 6,514,311 B1Industrial Technology Research Institute · 2003
- Mist suppressant for solvent extraction metal electrowinning36US 4,484,990 AMinnesota Mining and Manufacturing Company · 1984
- Process for making copper metal powder, copper oxides and copper foil36US 5,458,746 AGould Electronics Inc. · 1995