C07C 45/89
From carboxylic acids, their anhydrides, esters or halides
Official title: from carboxylic acids, their anhydrides, esters or halides
C07C45/89 (From carboxylic acids, their anhydrides, esters or halides) appears on 46 US grants and 18 published applications in this corpus.
Search patents in C07C- Granted patents
- 46
- Published applications
- 18
- Assignees
- 25
- Inventors
- 100
- Latest grant
- 4 Feb 2020
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 3 | 0 |
| 1986 | 3 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 2 | 0 |
| 1996 | 4 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 1 | 2 |
| 2007 | 1 | 2 |
| 2008 | 1 | 5 |
| 2009 | 5 | 0 |
| 2010 | 1 | 0 |
| 2011 | 1 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 1 |
| 2015 | 1 | 2 |
| 2016 | 1 | 1 |
| 2017 | 2 | 1 |
| 2018 | 1 | 1 |
| 2019 | 0 | 0 |
| 2020 | 1 | 0 |
| 2021 | 0 | 1 |
| 2022 | 0 | 0 |
| 2023 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Wood acetylation process4 Feb 2020US 10,550,065 B2Tricoya Technologies Ltd
- Method of producing potassium sorbate particles10 Jul 2018US 10,016,734 B2
- Preparation of pentanol with ethanol derived from fermentation23 May 2017US 9,656,932 B2Pioneer Energy, Inc.
- Device and method for continuously preparing high-purity AKD without solvent7 Feb 2017US 9,562,027 B2Suzhou Tianma Specialty Chemicals Co., Ltd.
- Preparation of pentanol with ethanol derived from fermentation13 Sep 2016US 9,440,898 B2Pioneer Energy, Inc.
- Process for Making Sorbic Acid from Renewable Materials20 Apr 2023US 2023/0118462 A1Celanese International Corporation
- Method for producing ketene derivative10 Jun 2021US 2021/0171428 A1Daicel Corporation
- Method of producing potassium sorbate particles1 Feb 2018US 2018/0028995 A1Ningbo Wanglong Tech Co.,Ltd
- Wood acetylation process20 Jul 2017US 2017/0204043 A1Tricoya Technologies Ltd
- Preparation of Butanol from Ethanol Derived from Fermentation4 Feb 2016US 2016/0031776 A1Pioneer Energy, Inc.
Most cited
By later US patents
- Catalyst and process for synthesis of ketenes from carboxylic acids129US 5,475,144 AUniversity of Delaware · 1995
- Functionalized monolith catalyst and process for production of ketenes119US 6,232,504 B1University of Delaware · 2001
- Preparation of fluorocarbonyl compounds115US 4,357,282 AE. I. Du Pont de Nemours and Company · 1982
- Process for the manufacture of 2,2,4,4-tetramethycyclobutanediol80US 5,169,994 AEastman Kodak Company · 1992
- Process for the manufacture of 2,2,4,4-tetramethylcyclobutanediol74US 5,258,556 AEastman Kodak Company · 1993