C07C 63/26
1,4 - benzenedicarboxylic acid
Official title: 1,4 - Benzenedicarboxylic acid
C07C63/26 (1,4 - benzenedicarboxylic acid) appears on 79 US grants and 89 published applications in this corpus.
Search patents in C07C- Granted patents
- 79
- Published applications
- 89
- Assignees
- 81
- Inventors
- 282
- Latest grant
- 28 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 0 |
| 2002 | 0 | 2 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 2 |
| 2007 | 1 | 4 |
| 2008 | 1 | 1 |
| 2009 | 0 | 1 |
| 2010 | 1 | 1 |
| 2011 | 2 | 1 |
| 2012 | 2 | 2 |
| 2013 | 0 | 2 |
| 2014 | 1 | 3 |
| 2015 | 4 | 9 |
| 2016 | 5 | 1 |
| 2017 | 3 | 5 |
| 2018 | 3 | 11 |
| 2019 | 12 | 6 |
| 2020 | 6 | 7 |
| 2021 | 6 | 7 |
| 2022 | 3 | 4 |
| 2023 | 1 | 2 |
| 2024 | 4 | 2 |
| 2025 | 1 | 8 |
| 2026 | 4 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Co-production of monomers, including at least one bio-based monomer28 Jul 2026US 12,692,217 B2Archer Daniels Midland Company
- Methods for recycling cotton and polyester fibers from waste textiles16 Jun 2026US 12,655,268 B2Circ, LLC
- Substrate processing apparatus, processing gas concentrating apparatus, and substrate processing method21 Apr 2026US 12,606,910 B2Tokyo Electron Limited
- Substrate processing apparatus, raw material cartridge, substrate processing method, and raw material cartridge manufacturing method20 Jan 2026US 12,529,138 B2Tokyo Electron Limited
- Method for preparing terephthalic acid, and terephthalic acid prepared therefrom14 Oct 2025US 12,441,675 B2SK Chemicals Co., Ltd.
- Methods for Recycling Cotton and Polyester Fibers from Waste Textiles1 Oct 2026US 2026/0297288 A1Circ, LLC
- Metal organic framework20 Aug 2026US 2026/0242325 A1Kyoto University
- Method for producing metal organic framework30 Jul 2026US 2026/0216693 A1Toagosei Co., Ltd.
- Method for producing regenerated terephthalic acid characterized by not using organic solvent and regenerated terephthalic acid produced thereby16 Jul 2026US 2026/0200823 A1Terracle Co., Ltd.
- Method of purification of terephthalic acid25 Jun 2026US 2026/0176227 A1DePoly SA
Most cited
By later US patents
- Catalyst recovery30US 4,910,175 AE. I. Du Pont de Nemours and Company · 1990
- Alkyl aromatic aldehydes23US 6,562,996 B2ExxonMobil Chemical Patents Inc. · 2003
- Adsorption systems using metal-organic frameworks20US 10,266,737 B2Arkema Inc. · 2019
- Cyclopentane derivatives15US 3,953,502 AImperial Chemical Industries PLC · 1976
- Process for making aromatic aldehydes using ionic liquids13US 6,320,083 B1ExxonMobil Chemical Company · 2001