C07C 253/16
Preparation of carboxylic acid nitriles: by reaction of cyanides with lactones or
Official title: by reaction of cyanides with lactones or compounds containing hydroxy groups or etherified or esterified hydroxy groups
C07C253/16 (Preparation of carboxylic acid nitriles: by reaction of cyanides with lactones or) appears on 31 US grants and 28 published applications in this corpus.
Search patents in C07C- Granted patents
- 31
- Published applications
- 28
- Assignees
- 29
- Inventors
- 104
- Latest grant
- 2 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 4 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 1 |
| 2003 | 1 | 1 |
| 2004 | 1 | 4 |
| 2005 | 1 | 0 |
| 2006 | 0 | 1 |
| 2007 | 2 | 5 |
| 2008 | 0 | 0 |
| 2009 | 2 | 2 |
| 2010 | 0 | 0 |
| 2011 | 0 | 1 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 1 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 2 |
| 2017 | 1 | 0 |
| 2018 | 1 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 1 |
| 2021 | 0 | 3 |
| 2022 | 1 | 1 |
| 2023 | 2 | 0 |
| 2024 | 0 | 2 |
| 2025 | 2 | 2 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method for the purification of ethylene cyanohydrin2 Dec 2025US 12,486,220 B2Evonik Operations GmbH
- Synthesis of straight-chain lepidopteran pheromones through one- or two-carbon homologation of fatty alkenes1 Jul 2025US 12,344,573 B2Provivi, Inc.
- Production of acetonitrile and/or hydrogen cyanide from ammonia and methanol19 Sep 2023US 11,760,718 B2Haldor TopsøE A/S
- Continuous flow synthesis of ibuprofen2 May 2023US 11,639,326 B2SRI International
- Amidite compound and method for producing polynucleotide using said compound2 Aug 2022US 11,401,296 B2Sumitomo Chemical Company, Limited
- Method for the purification of ethylene cyanohydrin26 Feb 2026US 2026/0055053 A1Evonik Operations GmbH
- Process for producing l-carnitine26 Jun 2025US 2025/0206696 A1Carnitech LLC
- Photoredox methods for radiocyanation of arenes and use thereof24 Apr 2025US 2025/0129016 A1The University of North Carolina at Chapel Hill
- Method of preparing phthalonitrile-based compound20 Jun 2024US 2024/0199536 A1Korea Kumho Petrochemical Co., Ltd.
- A method for the purification of ethylene cyanohydrin1 Feb 2024US 2024/0034715 A1Evonik Operations GmbH
Most cited
By later US patents
- Process for the preparation of 1-(thiomethyl)-cyclopropaneacetic acid17US 5,523,477 AMerck & Co., Inc. · 1996
- Preparation of esters6US 4,110,362 AShell Oil Company · 1978
- Preparation of esters4US 4,110,361 AShell Oil Company · 1978
- Preparation of esters4US 4,110,363 AShell Oil Company · 1978
- Process for the production of benzoyl cyanide (II)4US 4,117,008 ADeutsche Gold- und Silber-Scheideanstalt vormals Roessier · 1978