C07C 68/04
From carbon dioxide or inorganic carbonates
Official title: from carbon dioxide or inorganic carbonates
C07C68/04 (From carbon dioxide or inorganic carbonates) appears on 58 US grants and 53 published applications in this corpus.
Search patents in C07C- Granted patents
- 58
- Published applications
- 53
- Assignees
- 45
- Inventors
- 160
- Latest grant
- 7 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 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 | 3 | 0 |
| 1994 | 5 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 1 | 0 |
| 2004 | 1 | 0 |
| 2005 | 0 | 2 |
| 2006 | 0 | 0 |
| 2007 | 0 | 5 |
| 2008 | 2 | 2 |
| 2009 | 1 | 1 |
| 2010 | 4 | 3 |
| 2011 | 0 | 2 |
| 2012 | 1 | 0 |
| 2013 | 1 | 2 |
| 2014 | 1 | 4 |
| 2015 | 5 | 3 |
| 2016 | 3 | 4 |
| 2017 | 4 | 1 |
| 2018 | 0 | 0 |
| 2019 | 0 | 4 |
| 2020 | 4 | 2 |
| 2021 | 2 | 5 |
| 2022 | 4 | 7 |
| 2023 | 4 | 2 |
| 2024 | 3 | 2 |
| 2025 | 3 | 1 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Continuous process for the synthesis of dimethyl carbonate over a cerium-based catalyst formulation7 Jul 2026US 12,673,914 B2Council of Scientific and Industrial Research
- Method for producing carbonate esters, and catalytic structure for producing carbonate esters4 Nov 2025US 12,459,884 B2Mitsubishi Gas Chemical Company, Inc.
- Preparing method of linear carbonate compounds11 Mar 2025US 12,247,006 B2Institute for Basic Science
- Method for producing aromatic nitrile compound and method for producing carbonate ester21 Jan 2025US 12,202,786 B2Mitsubishi Gas Chemical Company, Inc.
- Dialkyl carbonate production method29 Oct 2024US 12,129,230 B2Mitsubishi Gas Chemical Company, Inc.
- Method and Application for Capturing and Converting Carbon Dioxide in Industrial Flue Gas7 Aug 2025US 2025/0249400 A1Linghangguochuang (Beijing) Technology Group Co., Ltd
- Method for producing carbonate esters, and catalytic structure for producing carbonate esters5 Dec 2024US 2024/0400495 A1Mitsubishi Gas Chemical Company, Inc.
- Continuous process for the synthesis of dimethyl carbonate over a cerium-based catalyst formulation28 Mar 2024US 2024/0101506 A1Council of Scientific and Industrial Research
- Method for producing aromatic nitrile compound and method for producing carbonate ester2 Nov 2023US 2023/0348367 A1Mitsubishi Gas Chemical Company, Inc.
- Methods of producing dimethyl carbonate26 Jan 2023US 2023/0024976 A1Qatar Foundation for Education, Science and Community Development
Most cited
By later US patents
- Process for preparing organic carbonates17US 4,217,298 ATokuyama Soda Kabushiki Kaisha · 1980
- Method for separating out and recovering dialkyltin dialkoxide16US 7,842,828 B2Asahi Kasei Chemicals Corporation · 2010
- Method for producing polyether carbonate polyols14US 8,946,466 B2Bayer Intellectual Property GmbH · 2015
- Preparation of urethane and carbonate products11US 5,200,547 AMonsanto Company · 1993
- Process for the production of carbonates that melt at a high temperature11US 6,515,145 B2Huntsman Petrochemical Corporation · 2003