C07D 307/50
Preparation from natural products
C07D307/50 (Preparation from natural products) appears on 196 US grants and 236 published applications in this corpus.
Search patents in C07D- Granted patents
- 196
- Published applications
- 236
- Assignees
- 136
- Inventors
- 583
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 4 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 2 | 1 |
| 2003 | 2 | 2 |
| 2004 | 1 | 1 |
| 2005 | 1 | 1 |
| 2006 | 1 | 2 |
| 2007 | 1 | 0 |
| 2008 | 1 | 1 |
| 2009 | 1 | 7 |
| 2010 | 1 | 2 |
| 2011 | 1 | 5 |
| 2012 | 5 | 11 |
| 2013 | 8 | 20 |
| 2014 | 10 | 26 |
| 2015 | 20 | 18 |
| 2016 | 19 | 20 |
| 2017 | 12 | 21 |
| 2018 | 21 | 17 |
| 2019 | 14 | 20 |
| 2020 | 15 | 18 |
| 2021 | 13 | 13 |
| 2022 | 8 | 6 |
| 2023 | 10 | 4 |
| 2024 | 3 | 4 |
| 2025 | 5 | 10 |
| 2026 | 2 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Catalytic and continuous thermochemical process of production of valuable derivatives from organic materials and/or waste6 Oct 2026US 12,753,141 B2Instituto Superior Tecnico
- Process for the production of furfural13 Jan 2026US 12,522,574 B2Arbaflame Technology AS
- Process for the production of furfural using a water immiscible organic solvent30 Dec 2025US 12,509,433 B2Covation, Inc.
- Co-solvent to produce reactive intermediates from biomass29 Jul 2025US 12,371,753 B2The Regents of the University of California
- Methods for producing 5-(halomethyl)furfural22 Apr 2025US 12,281,089 B2Origin Materials Operating, Inc.
- Bifunctional acidic catalysts and preperation methods of furfural via catalyzing hemicellulose or xylose8 Oct 2026US 2026/0307066 A1Nanjing University
- Process for the preparation of 5-(alkoxymethyl)furfural13 Aug 2026US 2026/0234117 A1Avantium Knowledge Centre B.V.
- Method for preparing 5-hydroxymethylfurfural in a temperature-controlled phase separation solvent system9 Jul 2026US 2026/0193224 A1China Agricultural University
- Improving yield of hydroxymethylfurfural through purification of sugar feed2 Jul 2026US 2026/0184686 A1Uop LLC
- Method for producing an aqueous 5-hydroxymethylfurfural (5-hmf) solution11 Jun 2026US 2026/0159491 A1Ifp Energies Nouvelles
Most cited
By later US patents
- Recovery of lignin112US 4,764,596 ARepap Technologies Inc. · 1988
- Production of levulinic acid from carbohydrate-containing materials70US 5,608,105 ABiofine Incorporated · 1997
- Furfural process65US 4,533,743 AAtlantic Richfield Company · 1985
- Organosolv delignification and saccharification process for lignocellulosic plant materials61US 4,409,032 AThermoform Bau-Und Forschungsgesellschaft · 1983
- Process for the manufacture of furfural55US 6,743,928 B1International Furan Technology (PTY) Limited · 2004