C07C 29/86
By liquid-liquid treatment
Official title: by liquid-liquid treatment
C07C29/86 (By liquid-liquid treatment) appears on 244 US grants and 210 published applications in this corpus.
Search patents in C07C- Granted patents
- 244
- Published applications
- 210
- Assignees
- 170
- Inventors
- 591
- Latest grant
- 21 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 3 | 0 |
| 1980 | 5 | 0 |
| 1981 | 8 | 0 |
| 1982 | 5 | 0 |
| 1983 | 8 | 0 |
| 1984 | 10 | 0 |
| 1985 | 7 | 0 |
| 1986 | 4 | 0 |
| 1987 | 4 | 0 |
| 1988 | 6 | 0 |
| 1989 | 2 | 0 |
| 1990 | 2 | 0 |
| 1991 | 9 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 4 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 5 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 0 |
| 2002 | 1 | 5 |
| 2003 | 4 | 3 |
| 2004 | 2 | 4 |
| 2005 | 0 | 1 |
| 2006 | 6 | 2 |
| 2007 | 1 | 2 |
| 2008 | 1 | 2 |
| 2009 | 3 | 5 |
| 2010 | 1 | 10 |
| 2011 | 2 | 9 |
| 2012 | 8 | 16 |
| 2013 | 11 | 25 |
| 2014 | 10 | 9 |
| 2015 | 19 | 14 |
| 2016 | 16 | 24 |
| 2017 | 9 | 14 |
| 2018 | 10 | 7 |
| 2019 | 4 | 5 |
| 2020 | 8 | 8 |
| 2021 | 7 | 7 |
| 2022 | 4 | 11 |
| 2023 | 5 | 10 |
| 2024 | 5 | 7 |
| 2025 | 3 | 4 |
| 2026 | 9 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method of extracting carbonic acid, aliphatic acids, esters and alcohols from an aqueous medium21 Jul 2026US 12,686,694 B2Evonik Operations GmbH
- Purification processing apparatus, substrate processing system, and processing method2 Jun 2026US 12,643,058 B2Tokyo Electron Limited
- Method for purifying an aqueous-alcoholic feedstock comprising ethanol and acetaldehyde5 May 2026US 12,616,917 B2Compagnie Generale Des Etablissements Michelin
- Method for the preparation of 1,2-propanediol28 Apr 2026US 12,612,346 B2Evonik Operations GmbH
- Method for concentrating raw material solution, and system for concentrating raw material solution17 Mar 2026US 12,576,362 B2Asahi Kasei Kabushiki Kaisha
- System and method for separation of non-ideal streams30 Jul 2026US 2026/0217635 A1Saudi Arabian Oil Company
- Method for Concentrating Raw Material Solution, and System for Concentrating Raw Material Solution23 Jul 2026US 2026/0208109 A1Asahi Kasei Kabushiki Kaisha
- Separation process of alcohol mixtures with high water content by liquid-liquid extraction23 Jul 2026US 2026/0209149 A1ENI S. p. A.
- Method for Concentrating Raw Material Solution, and System for Concentrating Raw Material Solution9 Jul 2026US 2026/0192254 A1Asahi Kasei Kabushiki Kaisha
- Method for the preparation of 1,2-propanediol4 Jun 2026US 2026/0152455 A1Evonik Operations GmbH
Most cited
By later US patents
- Apparatus for removing water from ethanol124US 4,842,693 AThe Distillers Company PLC · 1989
- Apparatus to concentrate and purify alcohol117US 5,250,271 AMinister of International Trade & Industry · 1993
- Method for the separation of impurities from crude ethanol aqueous solution114US 5,185,481 AJapan as represented by Ministry of International Trade and Industry, Director-General · 1993
- Method for separating ethanol from an ethanol containing solution110US 4,492,808 AFried. Krupp Gesellschaft mit beschrankter Haftung · 1985
- Method for solvent recovery in solvent separation of ethanol from water92US 4,520,213 AInstitute of Gas Technology · 1985