C07C 253/24
Preparation of carboxylic acid nitriles: by ammoxidation of hydrocarbons or substituted hydrocarbons
Official title: by ammoxidation of hydrocarbons or substituted hydrocarbons
C07C253/24 (Preparation of carboxylic acid nitriles: by ammoxidation of hydrocarbons or substituted hydrocarbons) appears on 576 US grants and 308 published applications in this corpus.
Search patents in C07C- Granted patents
- 576
- Published applications
- 308
- Assignees
- 150
- Inventors
- 780
- Latest grant
- 10 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 25 | 0 |
| 1977 | 23 | 0 |
| 1978 | 13 | 0 |
| 1979 | 11 | 0 |
| 1980 | 6 | 0 |
| 1981 | 12 | 0 |
| 1982 | 15 | 0 |
| 1983 | 12 | 0 |
| 1984 | 9 | 0 |
| 1985 | 8 | 0 |
| 1986 | 11 | 0 |
| 1987 | 5 | 0 |
| 1988 | 16 | 0 |
| 1989 | 25 | 0 |
| 1990 | 10 | 0 |
| 1991 | 8 | 0 |
| 1992 | 8 | 0 |
| 1993 | 13 | 0 |
| 1994 | 7 | 0 |
| 1995 | 7 | 0 |
| 1996 | 5 | 0 |
| 1997 | 7 | 0 |
| 1998 | 11 | 0 |
| 1999 | 16 | 0 |
| 2000 | 25 | 0 |
| 2001 | 9 | 1 |
| 2002 | 19 | 30 |
| 2003 | 20 | 21 |
| 2004 | 20 | 38 |
| 2005 | 15 | 20 |
| 2006 | 18 | 15 |
| 2007 | 13 | 12 |
| 2008 | 17 | 12 |
| 2009 | 10 | 11 |
| 2010 | 7 | 9 |
| 2011 | 9 | 6 |
| 2012 | 5 | 5 |
| 2013 | 5 | 12 |
| 2014 | 10 | 10 |
| 2015 | 10 | 9 |
| 2016 | 11 | 18 |
| 2017 | 11 | 2 |
| 2018 | 7 | 9 |
| 2019 | 8 | 13 |
| 2020 | 5 | 11 |
| 2021 | 9 | 12 |
| 2022 | 5 | 11 |
| 2023 | 12 | 6 |
| 2024 | 2 | 6 |
| 2025 | 7 | 2 |
| 2026 | 4 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Composition for catalyst production, method for producing composition for catalyst production, and production method for producing oxide catalyst10 Mar 2026US 12,569,832 B2Asahi Kasei Kabushiki Kaisha
- Ammoxidation catalyst for propylene, manufacturing method of the same catalyst, ammoxidation method using the same catalyst10 Mar 2026US 12,569,835 B2LG Chem.Ltd.
- Production of dinitriles17 Feb 2026US 12,552,741 B2INV Nylon Chemicals Americas, LLC
- Shaped catalyst body with improved properties, its preparation and use6 Jan 2026US 12,515,204 B2BASF SE
- Fluidized bed reactor, heat removal water pipe and application thereof in acrylonitrile production2 Dec 2025US 12,485,397 B2China Petroleum & Chemical Corporation
- Sustainable preparation of hexamethylene diisocyanate for the production of polyurethane17 Sep 2026US 2026/0274787 A1Covestro Deutschland AG
- Method for producing a compound and apparatus for producing a compound27 Aug 2026US 2026/0250131 A1Helander Holding Oy
- Catalyst, method for producing catalyst, and method for producing acrylonitrile20 Aug 2026US 2026/0241372 A1Asahi Kasei Kabushiki Kaisha
- Catalyst, method for producing the same, and method for producing acrylonitrile2 Jul 2026US 2026/0183756 A1Asahi Kasei Kabushiki Kaisha
- Catalyst and method for manufacturing the same, and method for manufacturing unsaturated nitrile or alkene25 Jun 2026US 2026/0175203 A1Asahi Kasei Kabushiki Kaisha
Most cited
By later US patents
- Process for producing nitriles83US 5,281,745 AMitsubishi Kasei Corporation · 1994
- Methods for producing unsaturated carboxylic acids and unsaturated nitriles78US 6,710,207 B2Rohm and Haas Company · 2004
- Cyclic autothermal hydrocarbon reforming process74US 6,761,838 B2The BOC Group, Inc. · 2004
- Process for forming multi-component oxide complex catalysts73US 4,148,757 AThe Standard Oil Company · 1979
- Catalysts useful for exothermic reactions70US 4,077,912 AThe Standard Oil Company · 1978