C07C 68/065
From alkylene carbonates
Official title: from alkylene carbonates
C07C68/065 (From alkylene carbonates) appears on 100 US grants and 88 published applications in this corpus.
Search patents in C07C- Granted patents
- 100
- Published applications
- 88
- Assignees
- 49
- Inventors
- 189
- Latest grant
- 16 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 4 | 0 |
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 3 | 0 |
| 1994 | 1 | 0 |
| 1995 | 3 | 0 |
| 1996 | 4 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 1 |
| 2002 | 6 | 0 |
| 2003 | 2 | 5 |
| 2004 | 3 | 4 |
| 2005 | 3 | 4 |
| 2006 | 2 | 0 |
| 2007 | 0 | 9 |
| 2008 | 3 | 4 |
| 2009 | 4 | 17 |
| 2010 | 7 | 3 |
| 2011 | 3 | 7 |
| 2012 | 6 | 4 |
| 2013 | 5 | 6 |
| 2014 | 4 | 2 |
| 2015 | 3 | 2 |
| 2016 | 4 | 1 |
| 2017 | 5 | 3 |
| 2018 | 1 | 1 |
| 2019 | 1 | 1 |
| 2020 | 0 | 2 |
| 2021 | 3 | 1 |
| 2022 | 1 | 3 |
| 2023 | 0 | 2 |
| 2024 | 2 | 2 |
| 2025 | 1 | 3 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Apparatus and method of producing dimethyl carbonate by reactive distillation using hybrid heat integration16 Jun 2026US 12,655,087 B2
- Method for industrially producing dialkyl carbonate and diol12 May 2026US 12,623,996 B2Asahi Kasei Kabushiki Kaisha
- Fluorinated electrolyte additives5 Aug 2025US 12,381,258 B2E3Trigen, Inc.
- Process for preparing dialkyl carbonate and alkanediol8 Oct 2024US 12,110,269 B2Shell USA, Inc.
- Process for preparing dialkyl carbonate and alkanediol24 Sep 2024US 12,098,125 B2Shell USA, Inc.
- Depolymerization method for resin having fluorene skeleton, and product and application thereof15 Jan 2026US 2026/0015483 A1Osaka Gas Chemicals Co., Ltd.
- Fluorinated electrolyte additives16 Oct 2025US 2025/0323319 A1E3Trigen, Inc.
- Method for producing carbonate30 Jan 2025US 2025/0034077 A1Lotte Chemical Corporation
- Method for producing carbonate30 Jan 2025US 2025/0034078 A1Lotte Chemical Corporation
- Method for industrially producing dialkyl carbonate and diol15 Feb 2024US 2024/0051911 A1Asahi Kasei Kabushiki Kaisha
Most cited
By later US patents
- Process for production of ethylene glycol and dimethyl carbonate59US 4,691,041 ATexaco Inc. · 1987
- Process for the continuous preparation of dialkyl carbonates50US 5,231,212 ABayer Aktiengesellschaft · 1993
- Process for the preparation of dialkyl carbonates48US 4,181,676 ABayer Aktiengesellschaft · 1980
- Process for the continuous preparation of dialkyl carbonates44US 5,359,118 ABayer Aktiengesellschaft · 1994
- Process for the preparation of dialkylcarbonates41US 4,062,884 AAnic S.p.A. · 1977