C07C 67/04
Preparation of carboxylic acid esters: by reacting carboxylic acids or symmetrical anhydrides
Official title: by reacting carboxylic acids or symmetrical anhydrides onto unsaturated carbon-to-carbon bonds
C07C67/04 (Preparation of carboxylic acid esters: by reacting carboxylic acids or symmetrical anhydrides) appears on 638 US grants and 339 published applications in this corpus.
Search patents in C07C- Granted patents
- 638
- Published applications
- 339
- Assignees
- 218
- Inventors
- 1,176
- Latest grant
- 27 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 23 | 0 |
| 1977 | 17 | 0 |
| 1978 | 29 | 0 |
| 1979 | 15 | 0 |
| 1980 | 25 | 0 |
| 1981 | 16 | 0 |
| 1982 | 12 | 0 |
| 1983 | 8 | 0 |
| 1984 | 28 | 0 |
| 1985 | 12 | 0 |
| 1986 | 8 | 0 |
| 1987 | 6 | 0 |
| 1988 | 4 | 0 |
| 1989 | 5 | 0 |
| 1990 | 8 | 0 |
| 1991 | 8 | 0 |
| 1992 | 4 | 0 |
| 1993 | 14 | 0 |
| 1994 | 9 | 0 |
| 1995 | 10 | 0 |
| 1996 | 8 | 0 |
| 1997 | 13 | 0 |
| 1998 | 13 | 0 |
| 1999 | 15 | 0 |
| 2000 | 25 | 0 |
| 2001 | 22 | 7 |
| 2002 | 23 | 16 |
| 2003 | 17 | 23 |
| 2004 | 16 | 17 |
| 2005 | 14 | 14 |
| 2006 | 11 | 17 |
| 2007 | 9 | 11 |
| 2008 | 12 | 19 |
| 2009 | 7 | 9 |
| 2010 | 12 | 21 |
| 2011 | 6 | 18 |
| 2012 | 15 | 25 |
| 2013 | 22 | 11 |
| 2014 | 11 | 17 |
| 2015 | 11 | 10 |
| 2016 | 13 | 14 |
| 2017 | 18 | 6 |
| 2018 | 10 | 12 |
| 2019 | 14 | 8 |
| 2020 | 9 | 15 |
| 2021 | 6 | 9 |
| 2022 | 3 | 4 |
| 2023 | 6 | 11 |
| 2024 | 9 | 9 |
| 2025 | 6 | 9 |
| 2026 | 1 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Photoredox-catalyzed direct C—H functionalization of arenes27 Jan 2026US 12,534,437 B2The University of North Carolina at Chapel Hill
- Gas barrier resin composition, method for producing gas barrier resin composition, and molded product4 Nov 2025US 12,460,074 B2Kuraray Co., Ltd.
- Catalytic method for acrylate production21 Oct 2025US 12,448,346 B1King Fahd University of Petroleum and Minerals
- Method of manufacturing sugar cane polyvinyl alcohol29 Jul 2025US 12,371,716 B2
- Methods and systems of monitoring flammability of various streams during vinyl acetate production10 Jun 2025US 12,325,686 B2Celanese International Corporation
- Method of producing bio-derived ester compound, bio-derived ester compound produced thereby, cosmetic or detergent containing bio-derived ester compound, and method of reducing odor of ester compound17 Sep 2026US 2026/0274783 A1Adeka Corporation
- Fluorinated esters, methods of synthesizing the same, and uses of the same27 Aug 2026US 2026/0250235 A1
- Process23 Jul 2026US 2026/0209163 A1Givaudan SA
- New method for the ozonolytic synthesis of high melting dicarboxylic acids and oxo-acids9 Jul 2026US 2026/0193160 A1
- Substituted 3-fluorobenzenepropanoate compound and preparation method therefor, pharmaceutical composition thereof, and use thereof14 May 2026US 2026/0132115 A1Tianjin Gudui Bio-Pharm Co., Ltd.
Most cited
By later US patents
- Titania-alumina supported palladium catalyst316US 8,507,720 B2Lyondell Chemical Technology, L,P. · 2013
- Production of ethanol from acetic acid178US 4,421,939 AUnion Carbide Corporation · 1983
- Method for producing catalysts containing metal nanoparticles on a porous support, especially for gas phase oxidation of ethylene and acetic acid to form vinyl acetate171US 6,603,038 B1Celanese Chemicals Europe GmbH · 2003
- Catalytic preparation of ethyl acetate126US 4,275,228 ARhone-Poulenc Industries · 1981
- Integrated process for the production of vinyl acetate and/or acetic acid118US 6,040,474 ABP Chemicals Limited · 2000