C25C 3/02
Electrolytic production, recovery or refining of metals by electrolysis of melts: of
Official title: of alkali or alkaline earth metals
C25C3/02 (Electrolytic production, recovery or refining of metals by electrolysis of melts: of) appears on 125 US grants and 127 published applications in this corpus.
Search patents in C25C- Granted patents
- 125
- Published applications
- 127
- Assignees
- 94
- Inventors
- 364
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 2 | 0 |
| 1978 | 3 | 0 |
| 1979 | 4 | 0 |
| 1980 | 4 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 3 | 0 |
| 1987 | 0 | 0 |
| 1988 | 6 | 0 |
| 1989 | 3 | 0 |
| 1990 | 1 | 0 |
| 1991 | 5 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 2 | 0 |
| 2001 | 3 | 1 |
| 2002 | 7 | 2 |
| 2003 | 2 | 1 |
| 2004 | 2 | 5 |
| 2005 | 0 | 2 |
| 2006 | 1 | 5 |
| 2007 | 1 | 5 |
| 2008 | 0 | 7 |
| 2009 | 0 | 8 |
| 2010 | 2 | 3 |
| 2011 | 2 | 3 |
| 2012 | 2 | 3 |
| 2013 | 2 | 4 |
| 2014 | 5 | 6 |
| 2015 | 2 | 3 |
| 2016 | 1 | 5 |
| 2017 | 2 | 3 |
| 2018 | 5 | 4 |
| 2019 | 3 | 5 |
| 2020 | 4 | 3 |
| 2021 | 2 | 6 |
| 2022 | 3 | 7 |
| 2023 | 1 | 10 |
| 2024 | 8 | 11 |
| 2025 | 9 | 10 |
| 2026 | 4 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Ammonia production21 Apr 2026US 12,606,450 B2Nederlandse Organisatie voor toegepast-natuurwetenschappelijk onderzoek TNO
- Beryllium solution production method, beryllium production method, beryllium hydroxide production method, beryllium oxide production method, solution production device, beryllium production system, and beryllium18 Nov 2025US 12,473,205 B2National Institutes for Quantum Science and Technology
- Method for recovering high-efficiency lithium from low-concentration lithium waste liquid and lithium carbonate produced thereby30 Apr 2026US 2026/0116755 A1Korea Institute of Geoscience and Mineral Resources
- Molten salt electrolytic cell and related systems and methods19 Mar 2026US 2026/0078516 A1Phoenix Tailings, Inc.
- Electrolytic process for producing cement5 Mar 2026US 2026/0062827 A1Blue Origin Manufacturing, LLC
- Direct electrochemical extraction of lithium from ores19 Feb 2026US 2026/0049409 A1The Penn State Research Foundation
- 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
Most cited
By later US patents
- Molten salt lithium cells111US 4,405,416 A1983
- Low temperature alkali metal electrolysis77US 6,368,486 B1E. I. Du Pont de Nemours and Company · 2002
- Substituted lithium orthosilicates and solid electrolytes therefrom60US 4,042,482 AE. I. Du Pont de Nemours and Company · 1977
- Process for producing a reactive metal-magnesium alloy54US 5,024,737 AThe Dow Chemical Company · 1991
- Substituted lithium phosphates and solid electrolytes therefrom43US 4,009,092 AE. I. Du Pont de Nemours and Company · 1977