C07C 45/52
By dehydration and rearrangement involving two hydroxy groups in the same molecule
Official title: by dehydration and rearrangement involving two hydroxy groups in the same molecule
C07C45/52 (By dehydration and rearrangement involving two hydroxy groups in the same molecule) appears on 151 US grants and 165 published applications in this corpus.
Search patents in C07C- Granted patents
- 151
- Published applications
- 165
- Assignees
- 110
- Inventors
- 335
- Latest grant
- 20 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 1 |
| 2003 | 0 | 0 |
| 2004 | 0 | 2 |
| 2005 | 0 | 2 |
| 2006 | 2 | 1 |
| 2007 | 1 | 3 |
| 2008 | 1 | 10 |
| 2009 | 4 | 13 |
| 2010 | 10 | 18 |
| 2011 | 10 | 23 |
| 2012 | 11 | 16 |
| 2013 | 14 | 14 |
| 2014 | 16 | 10 |
| 2015 | 9 | 18 |
| 2016 | 22 | 8 |
| 2017 | 4 | 6 |
| 2018 | 10 | 4 |
| 2019 | 6 | 2 |
| 2020 | 4 | 3 |
| 2021 | 1 | 0 |
| 2022 | 2 | 2 |
| 2023 | 0 | 1 |
| 2024 | 0 | 2 |
| 2025 | 1 | 2 |
| 2026 | 1 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Production of aromatic acids and phenolics20 Jan 2026US 12,528,758 B2Nederlandse Organisatie voor toegepast-natuurwetenschappelijk onderzoek TNO
- Lignin depolymerization and deoxygenation process for obtaining aromatic compounds and their catalytic reaction composition9 Sep 2025US 12,410,297 B2Instituto Mexicano Del Petroleo
- Glycerin-only reaction for allyl alcohol production14 Jun 2022US 11,358,920 B2Lyondell Chemical Technology, L,P.
- Prevention of tissue ischemia and related methods22 Feb 2022US 11,254,735 B2The United States of America, as represented by the Secretary, Depar tment of Health and Human Services
- Lignin depolymerisation and doxygenation process for obtaining aromatic compounds and their catalytic reaction composition23 Nov 2021US 11,180,628 B2Instituto Mexicano Del Petroleo
- Dehydration catalysts for acrolein production from glycerol and methods for forming the same18 Jun 2026US 2026/0166525 A1Trillium Renewable Chemicals
- Dehydration catalysts for acrolein production from glycerol and methods for forming the same28 May 2026US 2026/0145162 A1Trillium Renewable Chemicals
- Method for decomposing polyol or polyol ester28 May 2026US 2026/0146015 A1Ac Biode Ltd.
- Polyol dehydration using novel solid alumina composition26 Feb 2026US 2026/0055040 A1Braskem America, Inc.
- Direct conversion of glycerol to acrylic acid over wox/zrox and mixed metal oxide18 Dec 2025US 2025/0382254 A1
Most cited
By later US patents
- Functionalized ionic liquids, and methods of use thereof64US 7,208,605 B2University of South Alabama · 2007
- Process for the production of acrolein63US 5,387,720 ADegussa AG · 1995
- Signal enhancement in immunoassay by modulation of enzymatic catalysis39US 4,835,099 ABecton, Dickinson and Company · 1989
- Process for production of acrolein30US 7,683,220 B2Nippon Shokubai Co., Ltd. · 2010
- Process for the simultaneous production of 1,2- and 1,3-propanediol29US 5,426,249 ADegussa AG · 1995