C07C 29/103
Of cyclic ethers
Official title: {of cyclic ethers}
C07C29/103 (Of cyclic ethers) appears on 239 US grants and 171 published applications in this corpus.
Search patents in C07C- Granted patents
- 239
- Published applications
- 171
- Assignees
- 118
- Inventors
- 478
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 2 | 0 |
| 1978 | 4 | 0 |
| 1979 | 5 | 0 |
| 1980 | 5 | 0 |
| 1981 | 7 | 0 |
| 1982 | 6 | 0 |
| 1983 | 6 | 0 |
| 1984 | 4 | 0 |
| 1985 | 8 | 0 |
| 1986 | 11 | 0 |
| 1987 | 4 | 0 |
| 1988 | 2 | 0 |
| 1989 | 3 | 0 |
| 1990 | 3 | 0 |
| 1991 | 3 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 3 | 0 |
| 1996 | 3 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 3 | 0 |
| 2000 | 9 | 0 |
| 2001 | 3 | 0 |
| 2002 | 5 | 4 |
| 2003 | 4 | 4 |
| 2004 | 1 | 8 |
| 2005 | 5 | 5 |
| 2006 | 3 | 8 |
| 2007 | 3 | 10 |
| 2008 | 5 | 8 |
| 2009 | 6 | 14 |
| 2010 | 4 | 8 |
| 2011 | 9 | 6 |
| 2012 | 13 | 13 |
| 2013 | 10 | 6 |
| 2014 | 8 | 9 |
| 2015 | 8 | 12 |
| 2016 | 11 | 4 |
| 2017 | 4 | 4 |
| 2018 | 3 | 4 |
| 2019 | 3 | 6 |
| 2020 | 9 | 3 |
| 2021 | 3 | 5 |
| 2022 | 2 | 9 |
| 2023 | 8 | 8 |
| 2024 | 2 | 2 |
| 2025 | 6 | 6 |
| 2026 | 3 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- System and process for producing glycols18 Aug 2026US 12,709,590 B2Sabic Global Technologies B.V.
- Hydrocarbon pyrolysis with less exhaust emission12 May 2026US 12,624,295 B2ExxonMobil Chemical Patents Inc.
- Method for preparing methanol based on carbon dioxide capture, method for preparing ethylene glycol and environment-friendly polyester10 Mar 2026US 12,570,591 B1Jiangsu Zhonglu Technology Development Corporation Limited
- Methods for synthesis of the tricyclic prostaglandin D2 metabolite methyl ester11 Nov 2025US 12,466,791 B2Purdue Research Foundation
- Synthesis of sulfonamide intermediates14 Oct 2025US 12,441,681 B2Amgen Inc.
- Processes for preparing 3-isopropenyl-6-heptenal compound and 6-isopropenyl-3-methyl-3,9-decadienyl carboxylate compound, process for preparing intermediate thereof, and intermediate thereof8 Oct 2026US 2026/0308091 A1Shin-Etsu Chemical Co., Ltd.
- Polyethylene terephthalate produced from used tires1 Oct 2026US 2026/0297247 A1
- Composition and process of making bio-based upcycled oils in flow reactors9 Jul 2026US 2026/0191749 A1RiKarbon, Inc.
- Method for preparing methanol based on carbon dioxide capture, method for preparing ethylene glycol and environment-friendly polyester12 Mar 2026US 2026/0070865 A1Jiangsu Zhonglu Technology Development Corporation Limited
- Methods for synthesis of the tricyclic prostaglandin d2 metabolite methyl ester5 Mar 2026US 2026/0062381 A1Purdue Research Foundation
Most cited
By later US patents
- Process for producing adipic acid from biomass90US 4,400,468 AHydrocarbon Research, Inc. · 1983
- Conversion of polar compounds using a ZSM-5 zeolite catalyst47US 4,011,278 AMobil Oil Corporation · 1977
- Methods for producing epoxidation catalysts and epoxidation methods utilizing them42US 9,259,726 B2Dow Technology Investments LLC · 2016
- Method for making glycol in an adiabatic reactor system39US 6,160,187 AThe Dow Chemical Company · 2000
- Kinetic resolution method36US 6,639,087 B2Rhodia Pharma Solutions Inc. · 2003