C07C 67/24
Preparation of carboxylic acid esters: by reacting carboxylic acids or derivatives thereof
Official title: by reacting carboxylic acids or derivatives thereof with a carbon-to-oxygen ether bond, e.g. acetal, tetrahydrofuran
C07C67/24 (Preparation of carboxylic acid esters: by reacting carboxylic acids or derivatives thereof) appears on 222 US grants and 159 published applications in this corpus.
Search patents in C07C- Granted patents
- 222
- Published applications
- 159
- Assignees
- 156
- Inventors
- 618
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 4 | 0 |
| 1978 | 3 | 0 |
| 1979 | 1 | 0 |
| 1980 | 3 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 3 | 0 |
| 1985 | 3 | 0 |
| 1986 | 4 | 0 |
| 1987 | 1 | 0 |
| 1988 | 4 | 0 |
| 1989 | 1 | 0 |
| 1990 | 3 | 0 |
| 1991 | 4 | 0 |
| 1992 | 4 | 0 |
| 1993 | 10 | 0 |
| 1994 | 10 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 4 | 0 |
| 1998 | 2 | 0 |
| 1999 | 6 | 0 |
| 2000 | 2 | 0 |
| 2001 | 10 | 2 |
| 2002 | 13 | 15 |
| 2003 | 12 | 7 |
| 2004 | 4 | 8 |
| 2005 | 5 | 2 |
| 2006 | 3 | 3 |
| 2007 | 1 | 0 |
| 2008 | 2 | 5 |
| 2009 | 1 | 4 |
| 2010 | 1 | 4 |
| 2011 | 1 | 12 |
| 2012 | 9 | 4 |
| 2013 | 3 | 14 |
| 2014 | 4 | 6 |
| 2015 | 11 | 7 |
| 2016 | 12 | 13 |
| 2017 | 9 | 9 |
| 2018 | 6 | 6 |
| 2019 | 5 | 6 |
| 2020 | 6 | 2 |
| 2021 | 1 | 3 |
| 2022 | 4 | 8 |
| 2023 | 1 | 4 |
| 2024 | 5 | 4 |
| 2025 | 5 | 4 |
| 2026 | 3 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method for preparing modified natural oil using organocatalyst supported on polymer and modified natural oil prepared using the same29 Sep 2026US 12,747,197 B2Korea Research Institute of Chemical Technology
- Cardanol-based reactive diluents and their use and preparation15 Sep 2026US 12,735,381 B2Covestro (Netherlands) B.V.
- Compound, (co)polymer, composition, method for forming resist pattern, method for producing compound, and method for producing (co)polymer4 Aug 2026US 12,699,321 B2Mitsubishi Gas Chemical Company, Inc.
- Processes and intermediates for the preparations of benzoprostacyclin analogues and benzoprostacyclin analogues prepared therefrom16 Dec 2025US 12,497,374 B2Chirogate International Inc.
- Processes and intermediates for the preparations of benzoprostacyclin analogues and benzoprostacyclin analogues prepared therefrom16 Dec 2025US 12,497,375 B2Chirogate International Inc.
- Compound, composition, method for expressing sensitizing effect and production method8 Oct 2026US 2026/0308100 A1Mitsubishi Gas Chemical Company, Inc.
- Method for producing biaryl compound3 Sep 2026US 2026/0257977 A1FUJIFILM Corporation
- Process for the preparation of ethylhexylglycerol27 Aug 2026US 2026/0250225 A1Symrise AG
- Process27 Aug 2026US 2026/0250230 A1Givaudan SA
- Stilbene derivative, preparation method thereof and application thereof in preparation of drugs for treating psoriasis or ulcerative colitis11 Jun 2026US 2026/0159466 A1Huazhong University of Science and Technology
Most cited
By later US patents
- Process for producing vinyl acetate63US 4,843,170 AMitsubishi Gas Chemical Company, Inc. · 1989
- Radiation curable coatings containing hydroxy functional polyethers and polyesters of monoethylenic acids or hydroxy esters thereof29US 4,126,527 AMobil Oil Corporation · 1978
- High hydroxyl content glycerol di-esters29US 6,255,262 B1Exxon Chemical Patents Inc. · 2001
- Method for producing fatty acid polyglycol ester sulphates27US 6,235,913 B1Cognis Deutschland GmbH & Co. KG · 2001
- Process for the production of reaction mixtures containing ester polyols26US 5,266,714 AHenkel Kommanditgesellschaft auf Aktien · 1993