C07C 51/09
From carboxylic acid esters or lactones
Official title: from carboxylic acid esters or lactones
C07C51/09 (From carboxylic acid esters or lactones) appears on 921 US grants and 856 published applications in this corpus.
Search patents in C07C- Granted patents
- 921
- Published applications
- 856
- Assignees
- 566
- Inventors
- 2,627
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 20 | 0 |
| 1977 | 16 | 0 |
| 1978 | 13 | 0 |
| 1979 | 17 | 0 |
| 1980 | 23 | 0 |
| 1981 | 28 | 0 |
| 1982 | 21 | 0 |
| 1983 | 12 | 0 |
| 1984 | 5 | 0 |
| 1985 | 9 | 0 |
| 1986 | 14 | 0 |
| 1987 | 11 | 0 |
| 1988 | 10 | 0 |
| 1989 | 11 | 0 |
| 1990 | 7 | 0 |
| 1991 | 8 | 0 |
| 1992 | 8 | 0 |
| 1993 | 17 | 0 |
| 1994 | 15 | 0 |
| 1995 | 14 | 0 |
| 1996 | 8 | 0 |
| 1997 | 6 | 0 |
| 1998 | 9 | 0 |
| 1999 | 3 | 0 |
| 2000 | 10 | 0 |
| 2001 | 9 | 1 |
| 2002 | 17 | 11 |
| 2003 | 17 | 31 |
| 2004 | 19 | 26 |
| 2005 | 16 | 27 |
| 2006 | 16 | 20 |
| 2007 | 18 | 14 |
| 2008 | 13 | 24 |
| 2009 | 15 | 26 |
| 2010 | 12 | 35 |
| 2011 | 16 | 18 |
| 2012 | 16 | 35 |
| 2013 | 21 | 34 |
| 2014 | 32 | 34 |
| 2015 | 35 | 49 |
| 2016 | 41 | 49 |
| 2017 | 40 | 43 |
| 2018 | 41 | 55 |
| 2019 | 35 | 41 |
| 2020 | 51 | 41 |
| 2021 | 24 | 38 |
| 2022 | 21 | 49 |
| 2023 | 20 | 35 |
| 2024 | 23 | 44 |
| 2025 | 22 | 40 |
| 2026 | 16 | 36 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Process of making organic compounds1 Sep 2026US 12,723,012 B2Givaudan SA
- Cellulose ester compositions derived from recycled Cellulose ester content syngas25 Aug 2026US 12,715,938 B2Eastman Chemical Company
- Synthetic pathway to belzutifan18 Aug 2026US 12,709,595 B2Merck Sharp & Dohme Corp.
- Methods for recycling cotton and polyester fibers from waste textiles16 Jun 2026US 12,655,268 B2Circ, LLC
- Method of preparing triterpenoid compound5 May 2026US 12,617,746 B2National Taiwan University
- Biphenyl compound, pharmaceutical composition, method for preparing same, and use thereof1 Oct 2026US 2026/0297017 A1Longivitron (Suzhou) Biotechnology Co., Ltd
- Method for depolymerizing polyester1 Oct 2026US 2026/0297285 A1Kirin Holdings Kabushiki Kaisha
- Method for depolymerising a polyester comprising polyethylene terephthalate by recirculating an oligomer effluent1 Oct 2026US 2026/0297286 A1Ifp Energies Nouvelles
- Methods for Recycling Cotton and Polyester Fibers from Waste Textiles1 Oct 2026US 2026/0297288 A1Circ, LLC
- Decomposition method for polyester-based resin and decomposition apparatus for polyester-based resin17 Sep 2026US 2026/0275071 A1Nitto Denko Corporation
Most cited
By later US patents
- Method of producing carboxylic acid and alcohol130US 6,462,231 B1Kuraray Co., Ltd. · 2002
- Phase transfer catalysis of heterogeneous reactions by quaternary salts123US 3,992,432 AContinental Oil Company · 1976
- Process for the production of fatty acid alkyl esters84US 6,399,800 B1The United States of America as represented by the Secretary of Agriculture · 2002
- Herbicidal compositions80US 3,954,442 AHoechst Aktiengesellschaft · 1976
- Treprostinil production72US 8,481,782 B2United Therapeutics Corporation · 2013