C07C 67/36
Preparation of carboxylic acid esters: by reaction with carbon monoxide or formates
Official title: by reaction with carbon monoxide or formates (C07C67/02, C07C67/03, C07C67/10 take precedence)
C07C67/36 (Preparation of carboxylic acid esters: by reaction with carbon monoxide or formates) appears on 638 US grants and 352 published applications in this corpus.
Search patents in C07C- Granted patents
- 638
- Published applications
- 352
- Assignees
- 204
- Inventors
- 1,113
- Latest grant
- 7 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 12 | 0 |
| 1977 | 10 | 0 |
| 1978 | 5 | 0 |
| 1979 | 5 | 0 |
| 1980 | 5 | 0 |
| 1981 | 15 | 0 |
| 1982 | 21 | 0 |
| 1983 | 8 | 0 |
| 1984 | 26 | 0 |
| 1985 | 20 | 0 |
| 1986 | 23 | 0 |
| 1987 | 23 | 0 |
| 1988 | 15 | 0 |
| 1989 | 12 | 0 |
| 1990 | 11 | 0 |
| 1991 | 11 | 0 |
| 1992 | 12 | 0 |
| 1993 | 14 | 0 |
| 1994 | 19 | 0 |
| 1995 | 10 | 0 |
| 1996 | 5 | 0 |
| 1997 | 15 | 0 |
| 1998 | 12 | 0 |
| 1999 | 15 | 0 |
| 2000 | 13 | 0 |
| 2001 | 13 | 7 |
| 2002 | 14 | 9 |
| 2003 | 18 | 18 |
| 2004 | 9 | 11 |
| 2005 | 9 | 5 |
| 2006 | 11 | 17 |
| 2007 | 6 | 12 |
| 2008 | 9 | 9 |
| 2009 | 8 | 12 |
| 2010 | 6 | 18 |
| 2011 | 5 | 11 |
| 2012 | 7 | 12 |
| 2013 | 15 | 20 |
| 2014 | 19 | 11 |
| 2015 | 13 | 30 |
| 2016 | 28 | 17 |
| 2017 | 21 | 21 |
| 2018 | 19 | 22 |
| 2019 | 17 | 8 |
| 2020 | 11 | 12 |
| 2021 | 10 | 15 |
| 2022 | 9 | 16 |
| 2023 | 8 | 8 |
| 2024 | 7 | 12 |
| 2025 | 8 | 10 |
| 2026 | 1 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Propionic acid process7 Apr 2026US 12,595,223 B2Eastman Chemical Company
- Method for the preparation of omega-amino-carboxylic acids and derivatives thereof2 Dec 2025US 12,486,468 B2Versalis S.P.A.
- Process for preparing carbamoyloxymethyl triazole cyclohexyl acid compounds4 Nov 2025US 12,459,904 B2Bristol-Myers Squibb Company
- Production of synthesis gas from gasifying and reforming carbonaceous material23 Sep 2025US 12,421,464 B2Enerkem, Inc.
- Method for preparing organic carboxylic ester by using combined catalyst of aryl bidentate phosphine ligand26 Aug 2025US 12,398,089 B2Lanzhou Institute of Chemical Physics, CAS
- Fragrance composition, and method for producing 1-ethylcyclohexanecarboxylic acid ester13 Aug 2026US 2026/0234503 A1Mitsubishi Gas Chemical Company, Inc.
- Catalyst system and method for carbonylation reaction23 Jul 2026US 2026/0208174 A1Shandong Nhu Fine Chemical Science and Technology Company Ltd.
- Process for preparing carbamoyloxymethyl triazole cyclohexyl acid compounds2 Jul 2026US 2026/0184685 A1Bristol-Myers Squibb Company
- Methoxypyridyl ligands and use thereof in alkoxycarbonylation18 Jun 2026US 2026/0166539 A1Evonik Oxeno GmbH
- Method for producing compound having dicarboxylic acid derivative structure18 Jun 2026US 2026/0167587 A1Kyushu University, National University Corporation
Most cited
By later US patents
- Methanol plant retrofit for acetic acid manufacture208US 6,232,352 B1Acetex limited · 2001
- Continuous production of ethanol and plural stage distillation of the same157US 4,454,358 ABASF SE · 1984
- Carbonylation catalysts143US 4,792,620 ABP Chemicals Limited · 1988
- Process for the preparation of ethanol from methanol69US 5,414,161 AKorea Institute of Science and Technology · 1995
- Tin promoted platinum catalyst for carbonylation of lower alkyl alcohols68US 6,903,045 B2Eastman Chemical Company · 2005