C01F 17/17
Involving a liquid-liquid extraction
Official title: involving a liquid-liquid extraction
C01F17/17 (Involving a liquid-liquid extraction) appears on 82 US grants and 44 published applications in this corpus.
Search patents in C01F- Granted patents
- 82
- Published applications
- 44
- Assignees
- 63
- Inventors
- 214
- Latest grant
- 30 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 3 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 3 | 0 |
| 1987 | 1 | 0 |
| 1988 | 5 | 0 |
| 1989 | 3 | 0 |
| 1990 | 9 | 0 |
| 1991 | 4 | 0 |
| 1992 | 0 | 0 |
| 1993 | 6 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 4 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 1 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 1 | 2 |
| 2011 | 0 | 1 |
| 2012 | 2 | 3 |
| 2013 | 2 | 2 |
| 2014 | 4 | 6 |
| 2015 | 3 | 4 |
| 2016 | 3 | 0 |
| 2017 | 2 | 1 |
| 2018 | 1 | 1 |
| 2019 | 1 | 3 |
| 2020 | 1 | 2 |
| 2021 | 2 | 4 |
| 2022 | 1 | 6 |
| 2023 | 4 | 2 |
| 2024 | 1 | 1 |
| 2025 | 2 | 3 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Methods for separation and recovery of rare earth elements from aqueous solutions using diglycolamide derivatives30 Jun 2026US 12,668,857 B2Battelle Energy Alliance, LLC
- Diglycolamide derivatives for separation and recovery of rare earth elements from aqueous solutions26 Aug 2025US 12,398,444 B2UT-Battelle, LLC
- Systems and methods for separating yttrium and strontium29 Jul 2025US 12,371,338 B2Battelle Memorial Institute
- Enhanced separation of rare earth metals16 Apr 2024US 11,958,754 B2Seren Technologies Limited
- Task-specific ionic liquids for selective separation and recovery of rare earth elements19 Dec 2023US 11,845,670 B2The Curators of the University of Missouri
- Materials, methods and techniques for the selective extraction of cerium from praseodymium chloride solutions23 Jul 2026US 2026/0209061 A1
- Process for liquid-liquid extraction of rare earths or actinides via synergistic combination of a co-solvent hydrotrope with anionic or chelating extractants11 Jun 2026US 2026/0159407 A1Centre National De La Recherche Scientifique
- System and method for recycling magnetic material and rare earth elements contained therein4 Dec 2025US 2025/0369072 A1Cyclic Materials Inc.
- Process for separating rare-earth metals in admixture in aqueous solution4 Dec 2025US 2025/0369075 A1Snf S.A.S.
- System and method for recycling magnetic material and rare earth elements contained therein3 Apr 2025US 2025/0109454 A1Cyclic Materials Inc.
Most cited
By later US patents
- Extraction of metals using supercritical fluid and chelate forming legand71US 5,730,874 AIdaho Research Foundation, Inc. · 1998
- Methods and devices for the separation of radioactive rare earth metal isotopes from their alkaline earth metal precursors59US 5,225,173 AIdaho Research Foundation, Inc. · 1993
- Hydroxamic acid crown ethers58US 5,274,129 AIdaho Research Foundation, Inc. · 1993
- Method for extracting lanthanides and actinides from acid solutions45US 4,548,790 AThe United States of America as represented by the United States Department of Energy · 1985
- Recovery of rare earth elements from Bayer process red mud40US 5,030,424 AAlcan International Limited · 1991