C22B 3/262
Using alcohols or phenols
Official title: {using alcohols or phenols}
C22B3/262 (Using alcohols or phenols) appears on 53 US grants and 17 published applications in this corpus.
Search patents in C22B- Granted patents
- 53
- Published applications
- 17
- Assignees
- 54
- Inventors
- 136
- Latest grant
- 26 Aug 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 8 | 0 |
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 5 | 0 |
| 1980 | 3 | 0 |
| 1981 | 5 | 0 |
| 1982 | 1 | 0 |
| 1983 | 5 | 0 |
| 1984 | 3 | 0 |
| 1985 | 4 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 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 | 2 |
| 2012 | 0 | 2 |
| 2013 | 2 | 2 |
| 2014 | 1 | 0 |
| 2015 | 2 | 0 |
| 2016 | 0 | 1 |
| 2017 | 0 | 1 |
| 2018 | 2 | 1 |
| 2019 | 0 | 0 |
| 2020 | 1 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 2 |
| 2023 | 0 | 2 |
| 2024 | 0 | 1 |
| 2025 | 2 | 1 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Extraction system, extraction method for separating magnesium and extracting lithium and boron from magnesium-containing brine with complex solvent of secondary amide/alkyl alcohol as well as applications thereof26 Aug 2025US 12,398,046 B2Xiangtan University
- Method for recovering valuable material from perovskite solar cell1 Jul 2025US 12,344,916 B2National Tsing Hua University
- Process for recycling chromium from waste water containing hexavalent chromium3 Mar 2020US 10,577,676 B2Hunan Yonker Environmental Protection Research Institute Co., LTD
- Recovery of gold from solution4 Dec 2018US 10,144,989 B2Outotec (Finland) Oy
- Process for efficiently enriching and recovering noble metals of platinum and palladium by solvent extraction1 May 2018US 9,957,587 B2Beijing University of Technology
- Methods for extracting and recovering rare earths from aqueous solutions of organic acids23 Jul 2026US 2026/0209891 A1Centre National De La Recherche Scientifique
- Process for extracting tantalum and niobium from an aqueous acidic solution8 Jan 2026US 2026/0009106 A1Centre National De La Recherche Scientifique
- Metal extractant and separation recovery method of metal ions using metal extractant31 Jul 2025US 2025/0243560 A1FUJIFILM Corporation
- Method of metal recovery with cosolvent1 Aug 2024US 2024/0254590 A1
- Method for isolating an aqueous hydrochloric acid solution of fecl3 from an aqueous multi-component system7 Dec 2023US 2023/0391634 A1
Most cited
By later US patents
- Refining of noble group metals27US 3,979,207 AMatthey Rustenburg Refiners (Proprietary) Limited · 1976
- Liquid-liquid extraction process for the recovery of tungsten from low level sources25US 4,279,870 AGTE Laboratories Incorporated · 1981
- Process for the extraction of precious metals from solutions thereof25US 4,390,366 AInco Limited · 1983
- Process for eluting adsorbed gold and/or silver values from activated carbon24US 3,935,006 AThe United States of America as represented by the Secretary of the Interior · 1976
- Process for the removal of heavy metals and transition metals other than platinum from solution18US 4,203,952 AThe British Petroleum Company p.l.c. · 1980