C22B 3/384
Pentavalent phosphorus oxyacids, esters thereof
Official title: {Pentavalent phosphorus oxyacids, esters thereof}
C22B3/384 (Pentavalent phosphorus oxyacids, esters thereof) appears on 250 US grants and 194 published applications in this corpus.
Search patents in C22B- Granted patents
- 250
- Published applications
- 194
- Assignees
- 220
- Inventors
- 736
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 8 | 0 |
| 1977 | 9 | 0 |
| 1978 | 6 | 0 |
| 1979 | 6 | 0 |
| 1980 | 13 | 0 |
| 1981 | 10 | 0 |
| 1982 | 9 | 0 |
| 1983 | 13 | 0 |
| 1984 | 6 | 0 |
| 1985 | 9 | 0 |
| 1986 | 10 | 0 |
| 1987 | 7 | 0 |
| 1988 | 5 | 0 |
| 1989 | 3 | 0 |
| 1990 | 3 | 0 |
| 1991 | 4 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 6 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 4 | 0 |
| 1998 | 4 | 0 |
| 1999 | 7 | 0 |
| 2000 | 1 | 0 |
| 2001 | 4 | 2 |
| 2002 | 2 | 2 |
| 2003 | 1 | 2 |
| 2004 | 3 | 5 |
| 2005 | 0 | 1 |
| 2006 | 0 | 2 |
| 2007 | 2 | 3 |
| 2008 | 1 | 3 |
| 2009 | 1 | 0 |
| 2010 | 4 | 5 |
| 2011 | 0 | 5 |
| 2012 | 4 | 2 |
| 2013 | 3 | 4 |
| 2014 | 4 | 1 |
| 2015 | 2 | 1 |
| 2016 | 0 | 1 |
| 2017 | 2 | 3 |
| 2018 | 2 | 1 |
| 2019 | 3 | 8 |
| 2020 | 2 | 8 |
| 2021 | 4 | 11 |
| 2022 | 5 | 15 |
| 2023 | 8 | 32 |
| 2024 | 15 | 26 |
| 2025 | 19 | 32 |
| 2026 | 11 | 19 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Gas-Assisted Microflow Extraction (GAME) system patent6 Oct 2026US 12,753,463 B2Phinix, LLC
- Production method for cobalt sulfate26 May 2026US 12,637,361 B2Sumitomo Metal Mining Co., Ltd.
- Hydrometallurgical recovery method for nickel sulfate26 May 2026US 12,637,736 B2Ecopro Materials Co., Ltd.
- Solvent extraction method using two-stage extraction for separation and recovery of nickel, cobalt, and manganese28 Apr 2026US 12,612,678 B2Ecopro Materials Co., Ltd.
- Method for recycling nickel, cobalt and manganese from feed liquid containing nickel, cobalt and manganese28 Apr 2026US 12,612,681 B2Suzhou Botree Cycling Sci & Tech Co., Ltd
- Short-flow nickel-cobalt-manganese co-extraction process for laterite nickel ore hydrometallurgy20 Aug 2026US 2026/0242894 A1Gem Co., Ltd.
- Process for producing high purity aluminium materials13 Aug 2026US 2026/0234015 A1HiPurA Pty Ltd
- Selective separation of metals from mineral-rich concentrates6 Aug 2026US 2026/0226585 A1US Metals Refining Group, Inc.
- Method for removing the actinium contained in a rare earth solution with an organophosphorus solvent and rare earth compositions obtained by this method30 Jul 2026US 2026/0218335 A1Carester
- Method for treating an electronic waste and recovering valuable metals and rare earth elements therefrom23 Jul 2026US 2026/0213292 A1Institut National De La Recherche Scientifique
Most cited
By later US patents
- Extraction of metals using supercritical fluid and chelate forming legand71US 5,730,874 AIdaho Research Foundation, Inc. · 1998
- Recovery of gold from aqueous solutions51US 4,913,730 ACanadian Patents and Development Limited · 1990
- Method for separating metal constituents from ocean floor nodules46US 4,042,664 ADeepsea Ventures, Inc. · 1977
- Chloride assisted hydrometallurgical extraction of metal42US 5,902,474 ACominco Engineering Services Ltd. · 1999
- Process for producing electrolytic manganese dioxide from geothermal brines38US 6,682,644 B2MidAmerican Energy Holdings Company · 2004