C07C 27/26
Purification
Official title: Purification; Separation; Stabilisation
C07C27/26 (Purification) appears on 24 US grants and 24 published applications in this corpus.
Search patents in C07C- Granted patents
- 24
- Published applications
- 24
- Assignees
- 25
- Inventors
- 67
- Latest grant
- 16 Sep 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 2 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 2 |
| 2014 | 2 | 0 |
| 2015 | 1 | 4 |
| 2016 | 1 | 0 |
| 2017 | 1 | 1 |
| 2018 | 1 | 3 |
| 2019 | 2 | 2 |
| 2020 | 5 | 5 |
| 2021 | 3 | 2 |
| 2022 | 0 | 0 |
| 2023 | 2 | 1 |
| 2024 | 0 | 1 |
| 2025 | 2 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Process for recovering and reusing depolymerization catalyst16 Sep 2025US 12,415,179 B29449710 Canada Inc.
- Method for producing organic substance and apparatus for producing organic substance5 Aug 2025US 12,378,487 B2Sekisui Chemical Co., Ltd.
- Process for recovering and reusing depolymerization catalyst17 Jan 2023US 11,554,366 B29449710 Canada Inc.
- Methods of isolating phenols from phenol-containing media10 Jan 2023US 11,548,845 B2Wisconsin Alumni Research Foundation
- Process for the treatment of wastewater formed during the production of modified starches23 Nov 2021US 11,180,401 B2
- Process for producing dialkyl succinate6 Aug 2026US 2026/0225979 A1Johnson Matthey Davy Technologies Limited
- Process for recovering and reusing depolymerization catalyst21 Nov 2024US 2024/0382941 A19449710 Canada Inc.
- Method for producing organic substance and apparatus for producing organic substance16 Feb 2023US 2023/0050575 A1Sekisui Chemical Co., Ltd.
- Methods of isolating phenols from phenol-containing media30 Dec 2021US 2021/0403401 A1Wisconsin Alumni Research Foundation
- Methods of isolating phenols from phenol-containing media4 Mar 2021US 2021/0061743 A1Wisconsin Alumni Research Foundation
Most cited
By later US patents
- Method for producing butyraldehydes8US 5,865,957 AMitsubishi Chemical Corporation · 1999
- Separation of methanol, ethanol and/or dimethyl ether from hydrocarbon mixtures8US 6,984,765 B2ExxonMobil Chemical Patents Inc. · 2006
- Water removal in Fischer-Tropsch processes7US 7,001,927 B2ConocoPhillips Company · 2006
- Polybenzoxazole membranes from self-cross-linkable aromatic polyimide membranes7US 9,126,152 B2Uop LLC · 2015
- Working-up of reaction mixtures containing cyclohexanol and cyclohexanone4US 4,163,027 ABASF SE · 1979