C25C 1/16
Electrolytic production, recovery or refining of metals by electrolysis of solutions: of
Official title: of zinc, cadmium or mercury
C25C1/16 (Electrolytic production, recovery or refining of metals by electrolysis of solutions: of) appears on 131 US grants and 105 published applications in this corpus.
Search patents in C25C- Granted patents
- 131
- Published applications
- 105
- Assignees
- 113
- Inventors
- 395
- Latest grant
- 19 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 5 | 0 |
| 1978 | 4 | 0 |
| 1979 | 3 | 0 |
| 1980 | 3 | 0 |
| 1981 | 6 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 6 | 0 |
| 1985 | 2 | 0 |
| 1986 | 2 | 0 |
| 1987 | 8 | 0 |
| 1988 | 2 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 5 | 0 |
| 1992 | 0 | 0 |
| 1993 | 5 | 0 |
| 1994 | 0 | 0 |
| 1995 | 3 | 0 |
| 1996 | 5 | 0 |
| 1997 | 2 | 0 |
| 1998 | 3 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 1 |
| 2002 | 3 | 0 |
| 2003 | 0 | 5 |
| 2004 | 0 | 4 |
| 2005 | 1 | 1 |
| 2006 | 0 | 0 |
| 2007 | 1 | 0 |
| 2008 | 2 | 1 |
| 2009 | 0 | 0 |
| 2010 | 0 | 3 |
| 2011 | 0 | 2 |
| 2012 | 3 | 4 |
| 2013 | 4 | 2 |
| 2014 | 1 | 2 |
| 2015 | 1 | 3 |
| 2016 | 1 | 7 |
| 2017 | 2 | 5 |
| 2018 | 4 | 3 |
| 2019 | 3 | 6 |
| 2020 | 7 | 13 |
| 2021 | 7 | 4 |
| 2022 | 0 | 1 |
| 2023 | 2 | 11 |
| 2024 | 6 | 13 |
| 2025 | 4 | 7 |
| 2026 | 2 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method for recovering metal zinc from solid metallurgical wastes19 May 2026US 12,630,900 B2Engitec Technologies S.P.A.
- Ammonium complex system-based method for separating and purifying lead, zinc, cadmium, and copper31 Mar 2026US 12,590,352 B2GreenNovo Environmental Technology Co., Ltd
- Sustainable method for recycling smelting works dusts and sludges to produce iron-containing, heavy-metal-depleted reclaimed materials with recovery of lead and zinc21 Oct 2025US 12,448,666 B2ThyssenKrupp Steel Europe AG
- Method for recovering metal from waste printed circuit board and a cell thereof21 Oct 2025US 12,448,695 B2City University of Hong Kong
- Continuous process for sustainable production of hydrogen19 Aug 2025US 12,391,547 B2University of Surrey
- Cartridge electrode configurations13 Aug 2026US 2026/0234826 A1Electrasteel, Inc.
- Zinc recovery method and zinc ferrite decomposition method6 Aug 2026US 2026/0226582 A1Kinotech Corporation
- 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
- Electrolysis equipment28 May 2026US 2026/0146343 A1Industrial Technology Research Institute
- Three-compartment electrowinning cell and methods28 May 2026US 2026/0146351 A1Uchicago Argonne, LLC
Most cited
By later US patents
- Gas permeable electrode59US 4,931,168 ATanaka Kikinzoku Kogyo K.K. · 1990
- Selective recovery of manganese and zinc from geothermal brines51US 8,454,816 B1Simbol Inc. · 2013
- Recovery of zinc from geothermal brines40US 6,458,184 B2MidAmerican Energy Holdings Company · 2002
- Method for the electrodeposition of metals31US 4,789,445 AASARCO Incorporated · 1988
- Selective recovery of manganese, lead and zinc27US 8,518,232 B1Simbol Inc. · 2013