C22B 3/306
Ketones or aldehydes
Official title: {Ketones or aldehydes}
C22B3/306 (Ketones or aldehydes) appears on 69 US grants and 8 published applications in this corpus.
Search patents in C22B- Granted patents
- 69
- Published applications
- 8
- Assignees
- 41
- Inventors
- 132
- Latest grant
- 5 Aug 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 5 | 0 |
| 1978 | 1 | 0 |
| 1979 | 3 | 0 |
| 1980 | 5 | 0 |
| 1981 | 10 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 8 | 0 |
| 1985 | 8 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 3 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 3 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 1 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 1 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 1 |
| 2018 | 0 | 1 |
| 2019 | 0 | 0 |
| 2020 | 2 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 2 |
| 2023 | 0 | 2 |
| 2024 | 0 | 0 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Composition and method or recovering rare-earth elements5 Aug 2025US 12,378,640 B2
- Treatment of degraded oxime metal extractants in process organic solutions26 May 2020US 10,662,499 B2Outotec (Finland) Oy
- Process for recycling chromium from waste water containing hexavalent chromium3 Mar 2020US 10,577,676 B2Hunan Yonker Environmental Protection Research Institute Co., LTD
- Separation of iron from value metals in leaching of laterite ores23 Dec 2014US 8,916,116 B2Process Research Ortech, Inc.
- Highly-conductive copper extractant formulations8 Sep 2009US 7,585,475 B2Cognis IP Management GmbH
- Method for isolating an aqueous hydrochloric acid solution of fecl3 from an aqueous multi-component system7 Dec 2023US 2023/0391634 A1
- Processing of titaniferous ores and minerals5 Oct 2023US 2023/0312364 A1Fnc Technologies Inc.
- Lithium extractant compounds and their use in selective lithium extraction from aqueous solutions10 Nov 2022US 2022/0356545 A1
- Composition and method or recovering rare-earth elements14 Apr 2022US 2022/0112577 A1
- Treatment of degraded oxime metal extractants in process organic solutions15 Mar 2018US 2018/0073099 A1Outotec (Finland) Oy
Most cited
By later US patents
- Extraction of metals using supercritical fluid and chelate forming legand71US 5,730,874 AIdaho Research Foundation, Inc. · 1998
- Solvent extraction63US 4,507,268 AHenkel Corporation · 1985
- Microencapsulated chelating agents and their use in removing metal ions from aqueous solutions43US 4,500,494 AStauffer Chemical Company · 1985
- Fluid extraction34US 5,965,025 AIdaho Research Foundation, Inc. · 1999
- Selective extraction and recovery of copper32US 4,272,492 A1981