C01G 41/003
Preparation involving a liquid-liquid extraction, an adsorption or an ion-exchange
Official title: {Preparation involving a liquid-liquid extraction, an adsorption or an ion-exchange}
C01G41/003 (Preparation involving a liquid-liquid extraction, an adsorption or an ion-exchange) appears on 53 US grants and 14 published applications in this corpus.
Search patents in C01G- Granted patents
- 53
- Published applications
- 14
- Assignees
- 23
- Inventors
- 78
- Latest grant
- 4 Jan 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 7 | 0 |
| 1982 | 3 | 0 |
| 1983 | 7 | 0 |
| 1984 | 2 | 0 |
| 1985 | 7 | 0 |
| 1986 | 3 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 1 | 2 |
| 2010 | 1 | 3 |
| 2011 | 0 | 2 |
| 2012 | 3 | 1 |
| 2013 | 3 | 2 |
| 2014 | 1 | 2 |
| 2015 | 0 | 0 |
| 2016 | 2 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 1 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 1 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Preparation method of phosphotungstic acid4 Jan 2022US 11,214,495 B2Central South University
- Method for producing sodium tungstate, method for collecting tungsten, apparatus for producing sodium tungstate, and method for producing sodium tungstate aqueous solution6 Dec 2016US 9,512,504 B2A. L. M. T. Corp.
- Method for producing sodium tungstate, method for collecting tungsten, apparatus for producing sodium tungstate, and method for producing sodium tungstate aqueous solution2 Feb 2016US 9,249,479 B2A. L. M. T. Corp.
- Method for producing sodium tungstate, method for collecting tungsten, apparatus for producing sodium tungstate, and method for producing sodium tungstate aqueous solution21 Jan 2014US 8,632,747 B2A. L. M. T. Corp.
- Process for recovering molybdate or tungstate from aqueous solutions1 Oct 2013US 8,545,673 B2Evonik Degussa GmbH
- Method for producing lithium-containing solution13 Aug 2026US 2026/0234748 A1Sumitomo Metal Mining Co., Ltd.
- Preparation method of phosphotungstic acid20 Jun 2019US 2019/0185341 A1Central South University
- Method for producing sodium tungstate, method for collecting tungsten, apparatus for producing sodium tungstate, and method for producing sodium tungstate aqueous solution1 May 2014US 2014/0119998 A1A. L. M. T. Corp.
- Method for producing sodium tungstate, method for collecting tungsten, apparatus for producing sodium tungstate, and method for producing sodium tungstate aqueous solution24 Apr 2014US 2014/0112847 A1A. L. M. T. Corp.
- Process for the extraction of specific transition metals14 Mar 2013US 2013/0064742 A1Metals Recovery Technology Inc.
Most cited
By later US patents
- Liquid-liquid extraction process for the recovery of tungsten from low level sources25US 4,279,870 AGTE Laboratories Incorporated · 1981
- Recovering metals from spent hydroprocessing catalysts23US 4,500,495 AChevron Research Company · 1985
- Process for extracting tungsten from alkali metal tungstate solutions13US 4,175,109 AGTE Sylvania Incorporated · 1979
- Process for recovering molybdate or tungstate from aqueous solutions13US 8,545,673 B2Evonik Degussa GmbH · 2013
- Recovery of cobalt, molybdenum, nickel, tungsten and vanadium from an aqueous ammonia and ammonium salt solution by coextracting molybdenum, tungsten and vanadium and sequential extraction of nickel and cobalt12US 4,514,369 AChevron Research Company · 1985