C07C 67/39
Preparation of carboxylic acid esters: by oxidation of groups which are precursors
Official title: by oxidation of groups which are precursors for the acid moiety of the ester
C07C67/39 (Preparation of carboxylic acid esters: by oxidation of groups which are precursors) appears on 348 US grants and 315 published applications in this corpus.
Search patents in C07C- Granted patents
- 348
- Published applications
- 315
- Assignees
- 209
- Inventors
- 875
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 7 | 0 |
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 3 | 0 |
| 1981 | 3 | 0 |
| 1982 | 3 | 0 |
| 1983 | 3 | 0 |
| 1984 | 5 | 0 |
| 1985 | 4 | 0 |
| 1986 | 2 | 0 |
| 1987 | 4 | 0 |
| 1988 | 2 | 0 |
| 1989 | 5 | 0 |
| 1990 | 4 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 4 | 0 |
| 1994 | 5 | 0 |
| 1995 | 4 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 8 | 0 |
| 1999 | 4 | 0 |
| 2000 | 8 | 0 |
| 2001 | 8 | 2 |
| 2002 | 5 | 4 |
| 2003 | 4 | 8 |
| 2004 | 6 | 4 |
| 2005 | 4 | 10 |
| 2006 | 8 | 5 |
| 2007 | 1 | 5 |
| 2008 | 5 | 3 |
| 2009 | 1 | 1 |
| 2010 | 5 | 8 |
| 2011 | 3 | 6 |
| 2012 | 2 | 8 |
| 2013 | 9 | 13 |
| 2014 | 9 | 14 |
| 2015 | 13 | 20 |
| 2016 | 19 | 34 |
| 2017 | 20 | 14 |
| 2018 | 20 | 16 |
| 2019 | 15 | 14 |
| 2020 | 25 | 21 |
| 2021 | 13 | 24 |
| 2022 | 16 | 18 |
| 2023 | 15 | 20 |
| 2024 | 12 | 21 |
| 2025 | 15 | 16 |
| 2026 | 5 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Catalyst for production of carboxylic acid ester, method for producing catalyst for production of carboxylic acid ester, and method for producing carboxylic acid ester18 Aug 2026US 12,708,895 B2Asahi Kasei Kabushiki Kaisha
- Catalyst for production of carboxylic acid ester and method for producing carboxylic acid ester28 Jul 2026US 12,691,439 B2Asahi Kasei Kabushiki Kaisha
- Process for preparing (Z)-7-tetradecen-2-one30 Jun 2026US 12,668,561 B2Shin-Etsu Chemical Co., Ltd.
- Process and catalyst for oxidative esterification with mechanically strong and chemically resistant catalyst16 Jun 2026US 12,654,156 B2Dow Global Technologies LLC
- Integrated process to produce aldehydes from synthesis gas5 May 2026US 12,617,742 B2Rohm and Haas Company
- Acylation combined with esterification of lignin-derived material6 Aug 2026US 2026/0225989 A1
- Catalyst for the production of methyl methacrylate16 Jul 2026US 2026/0199880 A1
- Method of synthesizing acyl ester using microreactor2 Jul 2026US 2026/0184665 A1Industrial Technology Research Institute
- Process for producing monomers4 Jun 2026US 2026/0152454 A1Uop LLC
- Recycled content dimethyl terephthalate and related chemical components from waste plastic5 Feb 2026US 2026/0035533 A1Eastman Chemical Company
Most cited
By later US patents
- Process for the preparation of ethyl acetate134US 6,809,217 B1Davy Process Technology Limited · 2004
- Multi-staged catalyst systems and process for converting alkanes to alkenes and to their corresponding oxygenated products62US 7,361,622 B2Rohm and Haas Company · 2008
- Using methacrolein and methanol as dehydration and absorption agents during production of methyl methacrylate61US 5,969,178 AAsahi Kasei Kogyo Kabushiki Kaisha · 1999
- Method for oxidation of p-xylene and method for preparing dimethylterephthalate59US 4,342,876 ABechtel International Corporation · 1982
- Method for the production of benzene carboxylic acids and benzene dicarboxylic acid esters54US 4,908,471 AHuels Troisdorf AG · 1990