C07C 41/09
By dehydration of compounds containing hydroxy groups
Official title: by dehydration of compounds containing hydroxy groups
C07C41/09 (By dehydration of compounds containing hydroxy groups) appears on 443 US grants and 401 published applications in this corpus.
Search patents in C07C- Granted patents
- 443
- Published applications
- 401
- Assignees
- 296
- Inventors
- 1,306
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 3 | 0 |
| 1978 | 1 | 0 |
| 1979 | 9 | 0 |
| 1980 | 0 | 0 |
| 1981 | 3 | 0 |
| 1982 | 7 | 0 |
| 1983 | 3 | 0 |
| 1984 | 8 | 0 |
| 1985 | 14 | 0 |
| 1986 | 7 | 0 |
| 1987 | 7 | 0 |
| 1988 | 2 | 0 |
| 1989 | 6 | 0 |
| 1990 | 6 | 0 |
| 1991 | 5 | 0 |
| 1992 | 10 | 0 |
| 1993 | 12 | 0 |
| 1994 | 13 | 0 |
| 1995 | 14 | 0 |
| 1996 | 5 | 0 |
| 1997 | 11 | 0 |
| 1998 | 18 | 0 |
| 1999 | 4 | 0 |
| 2000 | 3 | 0 |
| 2001 | 6 | 1 |
| 2002 | 5 | 6 |
| 2003 | 7 | 2 |
| 2004 | 5 | 8 |
| 2005 | 3 | 3 |
| 2006 | 2 | 8 |
| 2007 | 4 | 9 |
| 2008 | 3 | 18 |
| 2009 | 3 | 15 |
| 2010 | 5 | 27 |
| 2011 | 2 | 20 |
| 2012 | 7 | 23 |
| 2013 | 16 | 21 |
| 2014 | 20 | 20 |
| 2015 | 22 | 35 |
| 2016 | 31 | 30 |
| 2017 | 20 | 25 |
| 2018 | 25 | 18 |
| 2019 | 11 | 6 |
| 2020 | 17 | 14 |
| 2021 | 9 | 20 |
| 2022 | 8 | 17 |
| 2023 | 13 | 14 |
| 2024 | 11 | 15 |
| 2025 | 9 | 13 |
| 2026 | 6 | 13 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Converting natural gas to dimethyl ether8 Sep 2026US 12,729,174 B2Saudi Arabian Oil Company
- Method for performing Mitsunobu reaction between alcoholic hydroxyl group donor and active hydrogen donor4 Aug 2026US 12,698,250 B2Jiangsu Hecheng Advanced Materials Co., Ltd.
- Process for making ethers from ethanol9 Jun 2026US 12,649,886 B2The Trustees of Princeton University
- Method of producing bio-derived branched alkyl glyceryl ether, and bio-derived branched alkyl glyceryl ether produced by said method20 Jan 2026US 12,528,755 B2Adeka Corporation
- Polyhydroxy aromatic intermediate, preparation thereof and use thereof in polycondensate water-reducer with branched side chains20 Jan 2026US 12,528,907 B2Bote New Materials Taizhou Co., Ltd.
- Method for producing dimethylether17 Sep 2026US 2026/0274777 A1Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e. V.
- Dimethyl ether (dme) synthesis13 Aug 2026US 2026/0234086 A1Lummus Technology Inc.
- Azeotropic extractive distillation for enhanced methanol refinement13 Aug 2026US 2026/0234090 A1Lummus Technology Inc.
- Process for preparing dipropylene glycol isomers6 Aug 2026US 2026/0226367 A1Oleon NV
- Process for producing c2-c4 olefins from methanol30 Jul 2026US 2026/0217626 A1BASF SE
Most cited
By later US patents
- Nano-structure supported solid regenerative polyamine and polyamine polyol absorbents for the separation of carbon dioxide from gas mixtures including the air77US 7,795,175 B2University of Southern California · 2010
- Continuous process for the preparation of polytrimethylene ether glycol65US 6,720,459 B2E. I. du Pont Nemours and Company · 2004
- Functionalized ionic liquids, and methods of use thereof64US 7,208,605 B2University of South Alabama · 2007
- Membrane catalytic reactor comprising heteropolyacid catalyst and polysulfone membrane54US 5,227,141 AKorea Institute of Science and Technology · 1993
- Olefin hydration process52US 4,012,452 ANational Distillers and Chemical Corporation · 1977