C07C 201/04
Preparation of esters of nitrous acid
C07C201/04 (Preparation of esters of nitrous acid) appears on 28 US grants and 17 published applications in this corpus.
Search patents in C07C- Granted patents
- 28
- Published applications
- 17
- Assignees
- 20
- Inventors
- 88
- Latest grant
- 2 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 3 | 0 |
| 1985 | 1 | 0 |
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| 1987 | 0 | 0 |
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| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 2 |
| 2004 | 0 | 1 |
| 2005 | 1 | 1 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 1 | 0 |
| 2009 | 0 | 2 |
| 2010 | 1 | 0 |
| 2011 | 1 | 2 |
| 2012 | 0 | 0 |
| 2013 | 1 | 1 |
| 2014 | 1 | 0 |
| 2015 | 2 | 3 |
| 2016 | 1 | 0 |
| 2017 | 1 | 0 |
| 2018 | 1 | 2 |
| 2019 | 0 | 0 |
| 2020 | 0 | 1 |
| 2021 | 1 | 0 |
| 2022 | 0 | 1 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 1 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Processes for preparing nitrosylated propanediols, compositions comprising the same, and medical uses thereof2 Dec 2025US 12,486,216 B2Attgeno AB
- Process for the synthesis of 2-nitratoethyl acrylate (2NEA)11 May 2021US 11,001,553 B1The United States of America as represented by the Secretary of the Navy
- Method for preparation of n-butyl nitrite13 Nov 2018US 10,125,087 B2Lonza Ltd.
- Nitric oxide releasing produgs of therapeutic agents19 Dec 2017US 9,844,599 B2
- Method for producing nitrous acid ester, and method for producing dialkyl oxalate and dialkyl carbonate22 Nov 2016US 9,499,473 B2Ube Industries, Ltd.
- Processes for preparing nitrosylated propanediols, compositions comprising the same, and medical uses thereof12 Mar 2026US 2026/0070870 A1Attgeno AB
- Processes for preparing nitrosylated propanediols, compositions comprising the same, and medical uses thereof6 Jan 2022US 2022/0002223 A1Attgeno AB
- Method and apparatus for producing alkyl nitrite13 Feb 2020US 2020/0048184 A1Ube Industries, Ltd.
- Method for preparation of n-butyl nitrite6 Sep 2018US 2018/0251420 A1Lonza Ltd.
- Nitric Oxide Releasing Produgs of Therapeutic Agents10 May 2018US 2018/0125986 A1
Most cited
By later US patents
- Preparation of nitrite esters15US 4,353,843 AUnion Carbide Corporation · 1982
- Process and reaction vessel for production of alkyl nitrite11US 4,908,466 AUnion Carbide Chemicals and Plastics Company Inc. · 1990
- Process for continuously preparing ethylene glycol10US 4,453,026 AUbe Industries, Ltd. · 1984
- Process for removal of impurities in alkyl nitrite formation7US 4,879,401 AUnion Carbide Chemicals and Plastics Company Inc. · 1989
- Process for the preparation of C.sub.1 -C.sub.4 -alkyl nitrites6US 5,649,322 ABayer Aktiengesellschaft · 1997