C25C 3/34
Electrolytic production, recovery or refining of metals by electrolysis of melts: of
Official title: of metals not provided for in groups C25C3/02 - C25C3/32
C25C3/34 (Electrolytic production, recovery or refining of metals by electrolysis of melts: of) appears on 173 US grants and 191 published applications in this corpus.
Search patents in C25C- Granted patents
- 173
- Published applications
- 191
- Assignees
- 132
- Inventors
- 521
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 3 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 3 | 0 |
| 1988 | 3 | 0 |
| 1989 | 4 | 0 |
| 1990 | 3 | 0 |
| 1991 | 3 | 0 |
| 1992 | 4 | 0 |
| 1993 | 6 | 0 |
| 1994 | 3 | 0 |
| 1995 | 4 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 3 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 1 |
| 2002 | 3 | 0 |
| 2003 | 1 | 1 |
| 2004 | 3 | 4 |
| 2005 | 3 | 4 |
| 2006 | 3 | 3 |
| 2007 | 1 | 4 |
| 2008 | 2 | 2 |
| 2009 | 1 | 6 |
| 2010 | 2 | 5 |
| 2011 | 3 | 7 |
| 2012 | 4 | 11 |
| 2013 | 5 | 12 |
| 2014 | 8 | 10 |
| 2015 | 9 | 8 |
| 2016 | 5 | 13 |
| 2017 | 7 | 4 |
| 2018 | 8 | 5 |
| 2019 | 9 | 7 |
| 2020 | 5 | 7 |
| 2021 | 6 | 7 |
| 2022 | 6 | 8 |
| 2023 | 4 | 13 |
| 2024 | 10 | 16 |
| 2025 | 7 | 18 |
| 2026 | 7 | 15 |
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
- System and process for sustainable electrowinning of metal16 Jun 2026US 12,655,533 B2Case Western Reserve University
- Real-time monitoring system and method for copper-arsenic sulfidation separation in copper electrolyte purification process19 May 2026US 12,630,899 B2Tongji University
- Recycling method for heavy rare earth element and recycling method for rare earth magnet14 Apr 2026US 12,601,033 B2Shin-Etsu Chemical Co., Ltd.
- Integrated thermionic diode and molten oxide electrolysis cell14 Apr 2026US 12,601,078 B2Blue Origin Manufacturing, LLC
- Electrorefining cathode assembly with deposit compactor for metal co-deposition and method20 Aug 2026US 2026/0242968 A1Uchicago Argonne, LLC
- System for solid-state electricity storage and solid-state electricity generation6 Aug 2026US 2026/0229568 A1
- Integrated thermionic diode and molten oxide electrolysis cell23 Jul 2026US 2026/0209981 A1Blue Origin Manufacturing, LLC
- Recovery of rare-earth metals from magnet scrap7 May 2026US 2026/0125777 A1
- Systems and methods for recovery of molten metal7 May 2026US 2026/0125814 A1Phoenix Tailings, Inc.
Most cited
By later US patents
- Electrochemical method of producing eutectic uranium alloy and apparatus58US 5,380,406 AThe United States of America as represented by the Department of Energy · 1995
- Electrorefining process and apparatus for recovery of uranium and a mixture of uranium and plutonium from spent fuels46US 4,880,506 AThe United States of America as represented by the Department of Energy · 1989
- Extraction of liquid elements by electrolysis of oxides43US 8,764,962 B2Massachusetts Institute of Technology · 2014
- Electrolytic production of metals using consumable anodes40US 5,185,068 AMassachusetts Institute of Technology · 1993
- Direct electrochemical reduction of metal-oxides38US 6,540,902 B1The United States of America as represented by the United States Department of Energy · 2003