C01B 25/46
Preparation involving solvent-solvent extraction
Official title: Preparation involving solvent-solvent extraction (solvent extraction in general B01D11/00)
C01B25/46 (Preparation involving solvent-solvent extraction) appears on 90 US grants and 9 published applications in this corpus.
Search patents in C01B- Granted patents
- 90
- Published applications
- 9
- Assignees
- 46
- Inventors
- 137
- Latest grant
- 15 Oct 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 3 | 0 |
| 1978 | 9 | 0 |
| 1979 | 5 | 0 |
| 1980 | 11 | 0 |
| 1981 | 7 | 0 |
| 1982 | 8 | 0 |
| 1983 | 2 | 0 |
| 1984 | 4 | 0 |
| 1985 | 6 | 0 |
| 1986 | 3 | 0 |
| 1987 | 4 | 0 |
| 1988 | 5 | 0 |
| 1989 | 4 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 1 | 1 |
| 2009 | 0 | 0 |
| 2010 | 1 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 0 |
| 2014 | 1 | 0 |
| 2015 | 0 | 2 |
| 2016 | 0 | 0 |
| 2017 | 1 | 0 |
| 2018 | 1 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 1 | 3 |
| 2025 | 0 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method for preparing battery-grade anhydrous iron phosphate from liquid crude monoammonium phosphate15 Oct 2024US 12,116,275 B2Sichuan University
- Process for preparing crystalline electrode materials and materials obtained therefrom16 Jan 2018US 9,871,245 B2Johnson Matthey Public Limited Company
- Production of ammonium phosphates22 Aug 2017US 9,738,522 B2Easymining Sweden AB
- Production of ammonium phosphates25 Feb 2014US 8,658,117 B2Easymining Sweden AB
- Method of producing phosphoric acid salt30 Mar 2010US 7,687,046 B2Ecophos S.A.
- Processing Of Phosphate Solutions6 Aug 2026US 2026/0225888 A1Easymining Sweden AB
- Systems and methods for phosphate processing11 Apr 2024US 2024/0116830 A1
- Chemical Processing Of Sewage Sludge Ash11 Apr 2024US 2024/0117462 A1Easymining Sweden AB
- Method for Preparing Battery-grade Anhydrous Iron Phosphate from Liquid Crude Monoammonium Phosphate28 Mar 2024US 2024/0101424 A1Sichuan University
- Production of Ammonium Phosphates17 Dec 2015US 2015/0360946 A1Easymining Sweden AB
Most cited
By later US patents
- Membrane solvent extraction82US 3,956,112 AAllied Chemical Corporation · 1976
- Extracting metal ions with diphosphonic acid, or derivative thereof25US 5,332,531 AArch Development Corporation · 1994
- Uranium recovery from wet-process phosphoric acid22US 4,180,545 ATennessee Valley Authority · 1979
- Preparation of phosphates15US 3,956,464 APennzoil Company · 1976
- Purification and conversion of phosphoric acid to ammonium phosphates14US 4,236,911 ATennessee Valley Authority · 1980