C07C 69/82
Terephthalic acid esters
C07C69/82 (Terephthalic acid esters) appears on 132 US grants and 136 published applications in this corpus.
Search patents in C07C- Granted patents
- 132
- Published applications
- 136
- Assignees
- 96
- Inventors
- 390
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 4 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 4 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 3 | 0 |
| 1993 | 2 | 0 |
| 1994 | 3 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 3 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 0 | 3 |
| 2005 | 1 | 2 |
| 2006 | 2 | 1 |
| 2007 | 1 | 2 |
| 2008 | 2 | 2 |
| 2009 | 2 | 1 |
| 2010 | 2 | 2 |
| 2011 | 2 | 3 |
| 2012 | 2 | 6 |
| 2013 | 3 | 7 |
| 2014 | 4 | 5 |
| 2015 | 6 | 6 |
| 2016 | 4 | 5 |
| 2017 | 6 | 6 |
| 2018 | 5 | 10 |
| 2019 | 8 | 15 |
| 2020 | 8 | 5 |
| 2021 | 7 | 9 |
| 2022 | 4 | 7 |
| 2023 | 4 | 11 |
| 2024 | 7 | 8 |
| 2025 | 8 | 14 |
| 2026 | 8 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method for preparing ester-based composition11 Aug 2026US 12,703,675 B2LG Chem.Ltd.
- Composition and method for preparing the same14 Jul 2026US 12,679,797 B2Industrial Technology Research Institute
- Method for manufacturing a recycled material composition7 Jul 2026US 12,674,037 B2SK Chemicals Co., Ltd.
- Process for depolymerization of a poly(C2-C4 alkylene terephthalate)30 Jun 2026US 12,668,563 B2Eastman Chemical Company
- Method for producing bis-2-hydroxyethyl terephthalate through continuous depolymerization12 May 2026US 12,624,188 B2SK Chemicals Co., Ltd.
- Processes for recovering dialkyl terephthalates from polyester compositions11 Jun 2026US 2026/0159471 A1Eastman Chemical Company
- Processes for recovering dialkyl terephthalates from polyester compositions4 Jun 2026US 2026/0152618 A1Eastman Chemical Company
- Processes for recovering dialkyl terephthalates from polyester compositions12 Mar 2026US 2026/0070868 A1Eastman Chemical Company
- Processes for recovering dialkyl terephthalates from tetramethyl cyclobutanediol (tmcd)-containing polymers12 Mar 2026US 2026/0071047 A1Eastman Chemical Company
- Method for producing bis(2hydroxyethyl)terephthalate by using recycled ethylene glycol5 Mar 2026US 2026/0062534 A1SK Chemicals Co., Ltd.
Most cited
By later US patents
- Tetralin esters of phenols or benzoic acids having retinoid like activity130US 5,130,335 AAllergan, Inc. · 1992
- Tetralin esters of phenols or benzoic acids having retinoid like activity111US 5,231,113 AAllergan, Inc. · 1993
- Achiral fluorine-containing liquid crystals56US 5,082,587 A1992
- Process for preparing polyethylene terephthalate and its low molecular weight oligomers36US 4,204,070 AFuji Photo Film Co., Ltd. · 1980
- Free-radical curable polyesters and methods for use thereof30US 7,285,613 B2Designer Molecules, Inc. · 2007