C07C 29/1285
Of esters of organic acids
Official title: {of esters of organic acids}
C07C29/1285 (Of esters of organic acids) appears on 86 US grants and 64 published applications in this corpus.
Search patents in C07C- Granted patents
- 86
- Published applications
- 64
- Assignees
- 59
- Inventors
- 245
- Latest grant
- 16 Sep 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 3 | 0 |
| 1981 | 3 | 0 |
| 1982 | 3 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 3 | 0 |
| 1986 | 0 | 0 |
| 1987 | 3 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 3 | 0 |
| 2001 | 5 | 0 |
| 2002 | 5 | 1 |
| 2003 | 1 | 1 |
| 2004 | 2 | 3 |
| 2005 | 1 | 0 |
| 2006 | 2 | 2 |
| 2007 | 0 | 0 |
| 2008 | 1 | 1 |
| 2009 | 2 | 0 |
| 2010 | 0 | 2 |
| 2011 | 1 | 2 |
| 2012 | 0 | 0 |
| 2013 | 2 | 0 |
| 2014 | 1 | 3 |
| 2015 | 3 | 4 |
| 2016 | 3 | 4 |
| 2017 | 3 | 3 |
| 2018 | 2 | 3 |
| 2019 | 4 | 5 |
| 2020 | 4 | 5 |
| 2021 | 1 | 4 |
| 2022 | 2 | 2 |
| 2023 | 3 | 3 |
| 2024 | 2 | 8 |
| 2025 | 2 | 3 |
| 2026 | 0 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Process for recovering and reusing depolymerization catalyst16 Sep 2025US 12,415,179 B29449710 Canada Inc.
- Process for the depolymerization of polyethylene terephthalate (PET)16 Sep 2025US 12,415,901 B29449710 Canada Inc.
- Process to recover high quality 3-methyl-but-3-en-1-ol7 May 2024US 11,976,030 B2BASF SE
- Terephthalic acid esters formation9 Jan 2024US 11,866,404 B29449710 Canada Inc.
- Process for the depolymerization of polyethylene terephthalate (PET)24 Oct 2023US 11,795,291 B29449710 Canada Inc.
- 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
- Low-temperature depolymerization of polymer containing urethane functional group using cosolvent and method for producing polyol8 Jan 2026US 2026/0008734 A1Korea Research Institute of Chemical Technology
Most cited
By later US patents
- Method for separating and recovering dimethyl terephthalate and ethylene glycol from polyester waste74US 6,706,843 B1Teijin Limited · 2004
- Novel tri-phenyl alkane and alkene derivatives and their preparation and use56US 4,696,949 AFarmos Group Ltd. · 1987
- Tri-phenyl alkane derivatives and their oestrogenic, anti-oestrogenic and progestanic uses39US 4,996,225 AFarmos Group Ltd. · 1991
- Process for continuously producing dialkyl carbonate and diol31US 6,479,689 B1Asahi Kasei Kabushiki Kaisha · 2002
- Process for preparing cyclooctene-4-ol-1 from cyclooctadiene-1,530US 4,506,105 AChemische Werke Huls Aktiengesellschaft · 1985