C07C 31/202
Ethylene glycol
Official title: {Ethylene glycol}
C07C31/202 (Ethylene glycol) appears on 97 US grants and 123 published applications in this corpus.
Search patents in C07C- Granted patents
- 97
- Published applications
- 123
- Assignees
- 60
- Inventors
- 241
- Latest grant
- 7 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 2 |
| 2013 | 0 | 2 |
| 2014 | 0 | 5 |
| 2015 | 3 | 5 |
| 2016 | 3 | 2 |
| 2017 | 7 | 10 |
| 2018 | 3 | 20 |
| 2019 | 17 | 21 |
| 2020 | 14 | 16 |
| 2021 | 16 | 15 |
| 2022 | 10 | 7 |
| 2023 | 10 | 4 |
| 2024 | 6 | 2 |
| 2025 | 4 | 4 |
| 2026 | 2 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Process for purification of recovered glycol from chemical recycling of waste polyester7 Jul 2026US 12,673,910 B2Auriga Polymers, Inc.
- Methods for preparing diol21 Apr 2026US 12,606,506 B2Changchun Meihe Science and Technology Development Co., Ltd.
- Multi-arm single molecular weight polyethylene glycol active derivative and application thereof17 Jun 2025US 12,331,016 B2Jenkem Technology Co., Ltd. (Tianjin)
- Dehydration and cracking of alpha-, beta-dihydroxy carbonyl compounds to lactic acid and other products22 Apr 2025US 12,281,067 B2Archer Daniels Midland Company
- Sorbent compositions for the removal of boron from aqueous mediums8 Apr 2025US 12,269,755 B2ADA Carbon Solutions, LLC
- Lithography method8 Oct 2026US 2026/0310079 A1Taiwan Semiconductor Manufacturing Company.Ltd
- Polyethylene terephthalate produced from used tires1 Oct 2026US 2026/0297247 A1
- 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
- Alcohol production11US 4,144,401 AChevron Research Company · 1979
- Terephthalic acid esters formation9US 10,252,976 B19449710 Canada Inc. · 2019
- Water-soluble unit dose articles made from a combination of different films8US 10,428,297 B2Monosol, LLC · 2019
- Methods for preparing diol8US 10,464,870 B2Changchum Meihe Science and Technology Development Co., LTD · 2019
- Process for the separation of glycols7US 10,081,584 B2Shell Oil Company · 2018