C07C 51/493
Whereby carboxylic acid esters are formed
Official title: whereby carboxylic acid esters are formed
C07C51/493 (Whereby carboxylic acid esters are formed) appears on 39 US grants and 27 published applications in this corpus.
Search patents in C07C- Granted patents
- 39
- Published applications
- 27
- Assignees
- 34
- Inventors
- 129
- Latest grant
- 21 Nov 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 3 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 3 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 3 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 1 | 1 |
| 2011 | 0 | 0 |
| 2012 | 1 | 2 |
| 2013 | 1 | 4 |
| 2014 | 2 | 4 |
| 2015 | 3 | 4 |
| 2016 | 3 | 2 |
| 2017 | 1 | 1 |
| 2018 | 1 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 1 |
| 2021 | 1 | 0 |
| 2022 | 0 | 1 |
| 2023 | 1 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 2 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Sebacic acid by-product fatty acid polyester polyol for polyurethane controlled-release fertilizer envelope, preparation method thereof and envelope21 Nov 2023US 11,820,741 B2Maoshi Agricultural Technology Co., Ltd
- Methods for producing a methanol precursor, methanol, and a methyl ester from methane in high purities1 Jun 2021US 11,021,429 B1Korea Institute of Science and Technology
- Process for the preparation and isolation of carboxylic esters8 May 2018US 9,963,414 B2thyssenkrupp AG
- Recovery of acetic acid4 Apr 2017US 9,611,207 B2LyondellBasell Acetyls, LLC
- Method for processing fluoric acid19 Jul 2016US 9,394,225 B2Rhodia Operations
- Process for recovering acrylic acid value from heavy waste byproducts11 Jun 2026US 2026/0159470 A1Dow Global Technologies LLC
- Preparing diesters of malonic acid16 Oct 2025US 2025/0320532 A1
- Continuous ion exchange and esterification of fermented malonic acid28 Aug 2025US 2025/0269366 A1Lygos, Inc.
- Sebacic acid by-product fatty acid polyester polyol for polyurethane controlled-release fertilizer envelope, preparation method thereof and envelope19 May 2022US 2022/0153678 A1Maoshi Agricultural Technology Co., Ltd
- Preparation and Purification of Biphenyldicarboxylic Acids17 Sep 2020US 2020/0290945 A1
Most cited
By later US patents
- Recovery of acetic acid from dilute aqueous streams formed during a carbonylation process161US 5,599,976 AHoechst Celanese Corporation · 1997
- Process for the recovery of fluorinated carboxylic acids58US 5,442,097 AHoechst Aktiengesellschaft · 1995
- Process for the recovery of fluorinated carboxylic acids35US 5,591,877 AHoechst Aktiengesellschaft · 1997
- Process for the purification of mixed acids28US 4,058,555 AEl Paso Products Company · 1977
- Production, purification and polymerization of aromatic dicarboxylic acids27US 6,642,407 B2Exxon Mobil Chemical Patents Inc. · 2003