C07C 253/20
Preparation of carboxylic acid nitriles: by dehydration of carboxylic acid amides
Official title: by dehydration of carboxylic acid amides
C07C253/20 (Preparation of carboxylic acid nitriles: by dehydration of carboxylic acid amides) appears on 58 US grants and 42 published applications in this corpus.
Search patents in C07C- Granted patents
- 58
- Published applications
- 42
- Assignees
- 48
- Inventors
- 208
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 3 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 3 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 3 | 0 |
| 2002 | 1 | 0 |
| 2003 | 2 | 1 |
| 2004 | 1 | 1 |
| 2005 | 0 | 1 |
| 2006 | 0 | 1 |
| 2007 | 0 | 2 |
| 2008 | 1 | 2 |
| 2009 | 1 | 0 |
| 2010 | 1 | 2 |
| 2011 | 1 | 1 |
| 2012 | 1 | 1 |
| 2013 | 2 | 4 |
| 2014 | 2 | 0 |
| 2015 | 1 | 1 |
| 2016 | 0 | 1 |
| 2017 | 2 | 1 |
| 2018 | 0 | 1 |
| 2019 | 1 | 3 |
| 2020 | 1 | 1 |
| 2021 | 4 | 4 |
| 2022 | 1 | 5 |
| 2023 | 2 | 3 |
| 2024 | 2 | 1 |
| 2025 | 2 | 2 |
| 2026 | 1 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method for manufacturing aromatic nitrile compound25 Aug 2026US 12,715,840 B2Ube Corporation
- Three-dimensional organic sandwich chirality and its synthetic assembly23 Dec 2025US 12,503,481 B2Texas Tech University System
- Method for producing aromatic nitrile compound and method for producing carbonate ester21 Jan 2025US 12,202,786 B2Mitsubishi Gas Chemical Company, Inc.
- Method for manufacturing aromatic nitrile compound6 Aug 2024US 12,054,448 B2Api Corporation
- Method of preparing malononitrile oxime ether compound and intermediate compound9 Apr 2024US 11,952,355 B2Shenyang Sinochem Agrochemicals R&D Co., Ltd.
- Preparation of 4-cyanobenzoyl chlorides from alkali metal 4-carbamoyl-benzoates16 Jul 2026US 2026/0200832 A1BASF SE
- Method for preparing heptafluoroisobutyronitrile by gas-phase catalysis26 Mar 2026US 2026/0085035 A1Sinochem Lantian Co., Ltd.
- Process for preparing cyantraniliprole via amino-cyano-benzene derivative26 Feb 2026US 2026/0055052 A1Adama Makhteshim Ltd.
- Processes for preparation of prmt5 inhibitors and intermediates for making the same2 Oct 2025US 2025/0304556 A1Mirati Therapeutics, Inc.
- Method of preparing glucose-derived adiponitrile and a method of dehydrating biomass-derived amide compound13 Mar 2025US 2025/0084031 A1Hyundai Motor Company
Most cited
By later US patents
- Method for producing alkoxy malonic acid dinitriles50US 6,673,957 B2Lonza Ltd. · 2004
- Process for synthesizing fluorinated nitrile compounds34US 5,637,748 AE. I. Du Pont de Nemours and Company · 1997
- Monomer recovery process for contaminated polymers33US 5,710,315 AE. I. Du Pont de Nemours and Company · 1998
- Monomer recovery process for contaminated polymers27US 5,532,404 AE. I. Du Pont de Nemours and Company · 1996
- Process for preparing nitriles by elimination reactions15US 7,939,688 B2Archimica GmbH · 2011