C07C 69/80
Phthalic acid esters
C07C69/80 (Phthalic acid esters) appears on 219 US grants and 217 published applications in this corpus.
Search patents in C07C- Granted patents
- 219
- Published applications
- 217
- Assignees
- 150
- Inventors
- 657
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 4 | 0 |
| 1978 | 1 | 0 |
| 1979 | 3 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 5 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 4 | 0 |
| 1993 | 3 | 0 |
| 1994 | 5 | 0 |
| 1995 | 3 | 0 |
| 1996 | 5 | 0 |
| 1997 | 4 | 0 |
| 1998 | 2 | 0 |
| 1999 | 5 | 0 |
| 2000 | 3 | 0 |
| 2001 | 1 | 0 |
| 2002 | 3 | 5 |
| 2003 | 3 | 6 |
| 2004 | 2 | 6 |
| 2005 | 2 | 6 |
| 2006 | 4 | 3 |
| 2007 | 5 | 5 |
| 2008 | 3 | 2 |
| 2009 | 3 | 3 |
| 2010 | 5 | 8 |
| 2011 | 5 | 4 |
| 2012 | 5 | 9 |
| 2013 | 5 | 10 |
| 2014 | 5 | 6 |
| 2015 | 9 | 9 |
| 2016 | 6 | 7 |
| 2017 | 8 | 9 |
| 2018 | 8 | 19 |
| 2019 | 15 | 17 |
| 2020 | 11 | 9 |
| 2021 | 10 | 14 |
| 2022 | 6 | 8 |
| 2023 | 4 | 14 |
| 2024 | 10 | 13 |
| 2025 | 11 | 17 |
| 2026 | 9 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
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 preparing ester-based composition16 Jun 2026US 12,655,086 B2LG Chem.Ltd.
- Method for the extraction and transformation, by alcoholysis and hydrolysis, of phthalates contained in pvc plastics9 Jul 2026US 2026/0193435 A1Ifp Energies Nouvelles
- Process for recycling polyethylene terephthalate using different mono-ethylene glycol levels25 Jun 2026US 2026/0176442 A1Revalyu Resources GmbH
- 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
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
- Phthalic diester derivatives and electron donors67US 6,670,497 B2Toho Titanium Co., Ltd. · 2003
- Achiral fluorine-containing liquid crystals56US 5,082,587 A1992
- Copolymer comprising isophthalic acid48US 6,506,853 B2E. I. Du Pont de Nemours and Company · 2003