C07C 253/18
Preparation of carboxylic acid nitriles: by reaction of ammonia or amines with
Official title: by reaction of ammonia or amines with compounds containing carbon-to-carbon multiple bonds other than in six-membered aromatic rings
C07C253/18 (Preparation of carboxylic acid nitriles: by reaction of ammonia or amines with) appears on 25 US grants and 31 published applications in this corpus.
Search patents in C07C- Granted patents
- 25
- Published applications
- 31
- Assignees
- 27
- Inventors
- 90
- Latest grant
- 3 Oct 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 2 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 2 | 0 |
| 2008 | 1 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 2 | 2 |
| 2014 | 0 | 2 |
| 2015 | 3 | 1 |
| 2016 | 2 | 1 |
| 2017 | 2 | 3 |
| 2018 | 0 | 4 |
| 2019 | 2 | 2 |
| 2020 | 2 | 4 |
| 2021 | 3 | 2 |
| 2022 | 1 | 1 |
| 2023 | 3 | 0 |
| 2024 | 0 | 4 |
| 2025 | 0 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Process for the synthesis of nitriles3 May 2022US 11,319,284 B2Haldor TopsøE A/S
- Preheating process and start-up process for the ammoxidation reaction17 Aug 2021US 11,091,407 B2China Petroleum & Chemical Corporation
- Method for converting ethanol and methods for producing other hydrocarbons18 Jun 2026US 2026/0167872 A1Asahi Kasei Kabushiki Kaisha
- Polyurea compositions from polyaspartic esters and 2-substituted butanedioic acid esters14 Nov 2024US 2024/0376343 A1Evonik Operations GmbH
- Heat removal tube set and application thereof in temperature control of fluidized bed reactor and production of unsaturated nitrile6 Jun 2024US 2024/0181417 A1China Petroleum & Chemical Corporation
- Heat removal tube set, method for controlling reaction temperature and method for producing unsaturated nitrile6 Jun 2024US 2024/0181418 A1China Petroleum & Chemical Corporation
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Most cited
By later US patents
- Fluidized-bed catalyst for propylene ammoxidation to acrylonitrile22US 5,834,394 AChina Petro-Chemical Corporation · 1998
- Catalyst for the manufacture of acrylonitrile and hydrogen cyanide15US 5,840,648 AThe Standard Oil Company · 1998
- Preparation of at least one partial oxidation and/or ammoxidation product of propylene15US 7,238,827 B2BASF SE · 2007
- Selective ammoxidation catalysts6US 9,211,527 B1Ineos Europe AG · 2015
- Selective ammoxidation catalysts5US 9,358,528 B2Ineos Europe AG · 2016