C22B 3/383
Tervalent phosphorus oxyacids, esters thereof
Official title: {Tervalent phosphorus oxyacids, esters thereof}
C22B3/383 (Tervalent phosphorus oxyacids, esters thereof) appears on 15 US grants and 5 published applications in this corpus.
Search patents in C22B- Granted patents
- 15
- Published applications
- 5
- Assignees
- 14
- Inventors
- 39
- Latest grant
- 12 Apr 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
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| 1989 | 0 | 0 |
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| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 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 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 1 |
| 2018 | 1 | 0 |
| 2019 | 0 | 2 |
| 2020 | 1 | 1 |
| 2021 | 1 | 0 |
| 2022 | 1 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Method for recovering a minor metal and/or rare-earth metal12 Apr 2022US 11,299,796 B2JX Nippon Mining & Metals Corporation
- Continuous solvent extraction process for generation of high grade rare earth oxides from leachates generated from coal sources30 Nov 2021US 11,186,895 B2University of Kentucky Research Foundation
- Method of recovering metal compounds from solid oxide fuel cell scrap12 May 2020US 10,651,479 B2Bloom Energy Corporation
- Use of amino-containing neutral phosphine extractant in extraction and separation of thorium and process of using same25 Sep 2018US 10,081,554 B2Changchun Institute of Applied Chemistry Chinese Academy of Sciences
- Method for removal of heavy metals from aqueous solutions using sodium di-(n-octyl)phosphinate or sodium di-(n-dodecyl) phosphinate26 Dec 2000US 6,165,427 AThe Royal Institution for the Advancement of Learning/Mcgill University
- Positive electrode active material using spent battery leachate for secondary battery and method of preparing same9 Oct 2025US 2025/0313917 A1Hanwha Corporation
- Continuous solvent extraction process for generation of high grade rare earth oxides from leachates generated from coal sources13 Feb 2020US 2020/0048737 A1University of Kentucky Research Foundation
- Method for recovering a minor metal and/or rare-earth metal26 Sep 2019US 2019/0292630 A1JX Nippon Mining & Metals Corporation
- Method of recovering metal compounds from solid oxide fuel cell scrap8 Aug 2019US 2019/0245216 A1Bloom Energy Corporation
- Use of amino-containing neutral phosphine extractant in extraction and separation of thorium and process of using same21 Sep 2017US 2017/0267540 A1Changchun Institute of Applied Chemistry Chinese Academy of Sciences
Most cited
By later US patents
- Process for separating trivalent iron from an aqueous chloride solution19US 4,490,338 AMetallurgie Hoboken-Overpelt · 1984
- Treatment of ores or metallurgical by-products containing arsenic and antimony16US 4,102,976 AMetallurgie Hoboken-Overpelt · 1978
- Rhodium recovery from hydroformylation still heel with triaryl phosphite ligand15US 4,135,911 AE. I. Du Pont de Nemours and Company · 1979
- Extraction of acids and metal salts from aqueous solutions with diethyl dodecylphosphonate7US 5,682,593 ABayer Aktiengesellschaft · 1997
- Extractant compositions containing dialkyl and diaryl phosphonate derivatives and methods for the use thereof6US 4,587,107 ANegev Jojoba · 1986