C01F 17/10
Preparation or treatment
Official title: Preparation or treatment, e.g. separation or purification
C01F17/10 (Preparation or treatment) appears on 158 US grants and 128 published applications in this corpus.
Search patents in C01F- Granted patents
- 158
- Published applications
- 128
- Assignees
- 129
- Inventors
- 482
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 4 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 4 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 4 | 0 |
| 1987 | 3 | 0 |
| 1988 | 6 | 0 |
| 1989 | 4 | 0 |
| 1990 | 12 | 0 |
| 1991 | 7 | 0 |
| 1992 | 2 | 0 |
| 1993 | 8 | 0 |
| 1994 | 6 | 0 |
| 1995 | 1 | 0 |
| 1996 | 3 | 0 |
| 1997 | 5 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 2 | 0 |
| 2008 | 1 | 1 |
| 2009 | 0 | 0 |
| 2010 | 1 | 2 |
| 2011 | 0 | 1 |
| 2012 | 2 | 4 |
| 2013 | 2 | 2 |
| 2014 | 5 | 8 |
| 2015 | 4 | 9 |
| 2016 | 4 | 1 |
| 2017 | 3 | 3 |
| 2018 | 7 | 5 |
| 2019 | 2 | 4 |
| 2020 | 3 | 3 |
| 2021 | 4 | 19 |
| 2022 | 3 | 18 |
| 2023 | 13 | 22 |
| 2024 | 7 | 3 |
| 2025 | 6 | 14 |
| 2026 | 9 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Tetraazadodecane based chelating agents for separation of rare earth elements and method therefor6 Oct 2026US 12,752,219 B2Ustav Organicke Chemie A Biochemie Av Cr, V. V. I.
- Methods for the recovery of rare earth elements11 Aug 2026US 12,703,641 B2Ohio State Innovation Foundation
- Methods for separation and recovery of rare earth elements from aqueous solutions using diglycolamide derivatives30 Jun 2026US 12,668,857 B2Battelle Energy Alliance, LLC
- Continuous ion exchange processes for separating rare earth elements16 Jun 2026US 12,655,499 B2
- High pressure caustic leach methods and processes for recovery of scandium and rare-earth oxides5 May 2026US 12,617,693 B2Scandium Canada Ltd.
- Materials, methods and techniques for the selective extraction of cerium from praseodymium chloride solutions23 Jul 2026US 2026/0209061 A1
- Powder processing device using microwave torch plasma having high density in edge area2 Jul 2026US 2026/0185203 A1Korea Institute of Fusion Energy
- Monodispersed spherical rare earth oxides18 Jun 2026US 2026/0167514 A1Neo Performance Materials (Singapore) Pte. Ltd.
- 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
- Rare earth element binding protein16 Apr 2026US 2026/0103486 A1
Most cited
By later US patents
- Supercritical fluid extraction80US 5,356,538 AIdaho Research Foundation, Inc. · 1994
- 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