C07C 263/14
Preparation of derivatives of isocyanic acid: by catalytic reaction of nitro compounds
Official title: by catalytic reaction of nitro compounds with carbon monoxide
C07C263/14 (Preparation of derivatives of isocyanic acid: by catalytic reaction of nitro compounds) appears on 11 US grants and 4 published applications in this corpus.
Search patents in C07C- Granted patents
- 11
- Published applications
- 4
- Assignees
- 11
- Inventors
- 43
- Latest grant
- 16 Sep 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 4 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 1 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 1 |
| 2022 | 1 | 0 |
| 2023 | 0 | 1 |
| 2024 | 0 | 0 |
| 2025 | 1 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Heterogeneous catalysts for the direct carbonylation of nitro aromatic compounds to isocyanates16 Sep 2025US 12,415,780 B2BASF SE
- Heterogeneous catalysts for the direct carbonylation of nitro aromatic compounds to isocyanates29 Nov 2022US 11,512,046 B2BASF SE
- Production of N-aryl carbamates and N-aryl isocyanates13 Dec 2011US 8,076,500 B2Philipps-Universitaet Marburg
- Catalytic process for the direct carbonylation of organic nitro compounds1 Jan 1985US 4,491,670 AIndian Explosives Limited
- Process for the manufacture of aromatic isocyanates23 Oct 1984US 4,478,757 AProduits Chimiques Ugine Kuhlmann
- Method for preparing isocyanates24 Apr 2025US 2025/0129017 A1Covestro Deutschland AG
- Heterogeneous catalysts for the direct carbonylation of nitro aromatic compounds to isocyanates27 Apr 2023US 2023/0131205 A1BASF SE
- Heterogeneous catalysts for the direct carbonylation of nitro aromatic compounds to isocyanates7 Jan 2021US 2021/0002210 A1BASF SE
- Production of N-aryl Carbamates and N-aryl Isocyanates26 Aug 2010US 2010/0217029 A1Philipps-Universitaet Marburg
Most cited
By later US patents
- Catalytic process for the direct carbonylation of organic nitro compounds9US 4,491,670 AIndian Explosives Limited · 1985
- Conversion of nitroso compounds to isocyanates5US 3,979,427 AOlin Corporation · 1976
- Process for the manufacture of aromatic isocyanates2US 4,332,739 AProduits Chimiques Ugine Kuhlmann · 1982
- Heterogeneous catalysts for the direct carbonylation of nitro aromatic compounds to isocyanates1US 11,512,046 B2BASF SE · 2022
- Process for producing isocyanate from nitro compounds and carbon monoxide using rhodium oxide catalysts1US 4,070,391 AEthyl Corporation · 1978