C07D 307/08
Preparation of tetrahydrofuran
C07D307/08 (Preparation of tetrahydrofuran) appears on 227 US grants and 126 published applications in this corpus.
Search patents in C07D- Granted patents
- 227
- Published applications
- 126
- Assignees
- 86
- Inventors
- 439
- Latest grant
- 17 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 9 | 0 |
| 1978 | 10 | 0 |
| 1979 | 7 | 0 |
| 1980 | 5 | 0 |
| 1981 | 12 | 0 |
| 1982 | 5 | 0 |
| 1983 | 7 | 0 |
| 1984 | 3 | 0 |
| 1985 | 2 | 0 |
| 1986 | 4 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 8 | 0 |
| 1991 | 2 | 0 |
| 1992 | 5 | 0 |
| 1993 | 1 | 0 |
| 1994 | 4 | 0 |
| 1995 | 3 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 5 | 0 |
| 2000 | 4 | 0 |
| 2001 | 12 | 0 |
| 2002 | 4 | 1 |
| 2003 | 3 | 4 |
| 2004 | 5 | 11 |
| 2005 | 5 | 2 |
| 2006 | 4 | 4 |
| 2007 | 4 | 3 |
| 2008 | 4 | 7 |
| 2009 | 4 | 2 |
| 2010 | 0 | 1 |
| 2011 | 6 | 11 |
| 2012 | 2 | 8 |
| 2013 | 8 | 4 |
| 2014 | 3 | 11 |
| 2015 | 5 | 14 |
| 2016 | 8 | 7 |
| 2017 | 4 | 6 |
| 2018 | 10 | 6 |
| 2019 | 8 | 9 |
| 2020 | 6 | 8 |
| 2021 | 3 | 2 |
| 2022 | 2 | 1 |
| 2023 | 2 | 0 |
| 2024 | 0 | 3 |
| 2025 | 2 | 1 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Solvent drying solution and processes therfor17 Mar 2026US 12,577,185 B2Aquafortus Technologies Limited
- Oxygenated hydrocarbon production system with acidic impurity removal resin column16 Dec 2025US 12,497,372 B2SipChem Sahara International Petrochemical Company JSC
- Co-solvent to produce reactive intermediates from biomass29 Jul 2025US 12,371,753 B2The Regents of the University of California
- Nematocidal heterocyclic amides2 May 2023US 11,638,428 B2Corteva Agriscience LLC
- Single step process for production of 2-methyltetrahydrofuran from furfuryl alcohol31 Jan 2023US 11,566,010 B2Penn A Kem LLC
- Shielding compound, method of forming thin film using shielding compound, semiconductor substrate fabricated using method, and semiconductor device including semiconductor substrate12 Jun 2025US 2025/0188599 A1Soulbrain Co., Ltd.
- Oxygenated hydrocarbon production system with acidic impurity removal resin column26 Sep 2024US 2024/0317697 A1SipChem Sahara International Petrochemical Company JSC
- Method for producing tetrahydrofuran, gamma-butyrolactone, or 1,4-butanediol29 Aug 2024US 2024/0287011 A1Cj Cheiljedang Corporation
- A solvent drying solution and processes therfor8 Aug 2024US 2024/0262772 A1Aquafortus Technologies Limited
- Single step process for production of 2-methyltetrahydrofuran from furfuryl alcohol27 Oct 2022US 2022/0340536 A1Penn A Kem LLC
Most cited
By later US patents
- Method for producing alcohols by hydrogenation of carbonyl compounds147US 6,486,366 B1Degussa AG · 2002
- Process for making tetrahydrofuran and 1,4-butanediol using Pd/Re hydrogenation catalyst106US 4,550,185 AE. I. Du Pont de Nemours and Company · 1985
- Ru,Re/carbon catalyst for hydrogenation in aqueous solution99US 5,478,952 AE. I. Du Pont de Nemours and Company · 1995
- Manufacture of butanediol and/or tetrahydrofuran from maleic and/or succinic anhydride via .gamma.- butyrolactone97US 4,048,196 ABASF SE · 1977
- Process for the manufacture of 1-4-butanediol and tetrahydrofuran87US 4,301,077 AThe Standard Oil Company · 1981