C22B 3/40
Mixtures
C22B3/40 (Mixtures) appears on 203 US grants and 81 published applications in this corpus.
Search patents in C22B- Granted patents
- 203
- Published applications
- 81
- Assignees
- 157
- Inventors
- 477
- Latest grant
- 28 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 8 | 0 |
| 1978 | 9 | 0 |
| 1979 | 8 | 0 |
| 1980 | 16 | 0 |
| 1981 | 13 | 0 |
| 1982 | 12 | 0 |
| 1983 | 9 | 0 |
| 1984 | 14 | 0 |
| 1985 | 8 | 0 |
| 1986 | 4 | 0 |
| 1987 | 4 | 0 |
| 1988 | 2 | 0 |
| 1989 | 6 | 0 |
| 1990 | 7 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 5 | 0 |
| 1994 | 4 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 2 | 0 |
| 2001 | 3 | 0 |
| 2002 | 1 | 0 |
| 2003 | 1 | 0 |
| 2004 | 1 | 2 |
| 2005 | 0 | 0 |
| 2006 | 0 | 2 |
| 2007 | 1 | 1 |
| 2008 | 0 | 3 |
| 2009 | 2 | 0 |
| 2010 | 1 | 1 |
| 2011 | 1 | 3 |
| 2012 | 1 | 4 |
| 2013 | 2 | 1 |
| 2014 | 3 | 4 |
| 2015 | 5 | 6 |
| 2016 | 4 | 5 |
| 2017 | 2 | 1 |
| 2018 | 6 | 5 |
| 2019 | 3 | 4 |
| 2020 | 1 | 2 |
| 2021 | 4 | 4 |
| 2022 | 4 | 8 |
| 2023 | 1 | 4 |
| 2024 | 4 | 7 |
| 2025 | 4 | 5 |
| 2026 | 4 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- 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
- Process for producing high purity aluminum materials31 Mar 2026US 12,590,008 B2HiurA Pty Ltd
- Method for separating cobalt and nickel17 Mar 2026US 12,577,636 B2Mitsubishi Materials Corporation
- Method for producing lithium hydroxide6 Jan 2026US 12,515,960 B2Jx Metals Circular Solutions Co., Ltd.
- Method for lithium recovery by extraction-stripping separation and purification25 Nov 2025US 12,480,179 B2Institute of Process Engineering, Chinese Academy of Sciences
- Selective extraction of rhodium from hydrochloric acid solutions comprising rhodium and iridium10 Sep 2026US 2026/0265861 A1Johnson Matthey Public Limited Company
- Process for producing high purity aluminium materials13 Aug 2026US 2026/0234015 A1HiPurA Pty 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
- Use of lipophilic derivatives of aminopolycarboxylic acids for the extraction of rare earths from an acidic aqueous solution14 May 2026US 2026/0132482 A1Centre National De La Recherche Scientifique
- Lithium extraction agent for lithium precipitation mother liquor and extraction method thereof14 May 2026US 2026/0132483 A1Institute of Process Engineering, Chinese Academy of Sciences
Most cited
By later US patents
- 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
- Process for the recovery of metals from used nickel/metal/rare earth hydride storage batteries33US 6,110,433 AVarta Batterie Aktiengesellschaft · 2000
- Recovering zinc from a material containing zinc and iron32US 4,124,462 AMX-Processer Reinhardt & Co. AB · 1978
- Selective extraction and recovery of copper32US 4,272,492 A1981
- Separation of nickel and cobalt from sulfate solutions by solvent extraction32US 4,900,522 AAmax Inc. · 1990