C07D 311/22
With oxygen or sulfur atoms directly attached in position 4
Official title: with oxygen or sulfur atoms directly attached in position 4
C07D311/22 (With oxygen or sulfur atoms directly attached in position 4) appears on 1,165 US grants and 975 published applications in this corpus.
Search patents in C07D- Granted patents
- 1,165
- Published applications
- 975
- Assignees
- 715
- Inventors
- 3,452
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 16 | 0 |
| 1977 | 20 | 0 |
| 1978 | 21 | 0 |
| 1979 | 29 | 0 |
| 1980 | 34 | 0 |
| 1981 | 24 | 0 |
| 1982 | 21 | 0 |
| 1983 | 13 | 0 |
| 1984 | 12 | 0 |
| 1985 | 14 | 0 |
| 1986 | 14 | 0 |
| 1987 | 21 | 0 |
| 1988 | 16 | 0 |
| 1989 | 25 | 0 |
| 1990 | 17 | 0 |
| 1991 | 14 | 0 |
| 1992 | 19 | 0 |
| 1993 | 32 | 0 |
| 1994 | 13 | 0 |
| 1995 | 19 | 0 |
| 1996 | 14 | 0 |
| 1997 | 18 | 0 |
| 1998 | 20 | 0 |
| 1999 | 26 | 0 |
| 2000 | 31 | 0 |
| 2001 | 29 | 7 |
| 2002 | 33 | 35 |
| 2003 | 32 | 44 |
| 2004 | 24 | 63 |
| 2005 | 25 | 38 |
| 2006 | 23 | 47 |
| 2007 | 14 | 29 |
| 2008 | 18 | 39 |
| 2009 | 24 | 51 |
| 2010 | 24 | 39 |
| 2011 | 25 | 32 |
| 2012 | 32 | 37 |
| 2013 | 29 | 44 |
| 2014 | 26 | 38 |
| 2015 | 32 | 52 |
| 2016 | 27 | 56 |
| 2017 | 41 | 38 |
| 2018 | 28 | 33 |
| 2019 | 40 | 36 |
| 2020 | 27 | 33 |
| 2021 | 19 | 31 |
| 2022 | 21 | 39 |
| 2023 | 25 | 32 |
| 2024 | 20 | 40 |
| 2025 | 11 | 29 |
| 2026 | 13 | 13 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Direct aromatic carbon-oxygen and carbon-hydrogen bond functionalization via organic photoredox catalyst8 Sep 2026US 12,729,169 B2The University of North Carolina at Chapel Hill
- 4′-substituted analogues of fisetin and their use in the treatment of cancer25 Aug 2026US 12,715,851 B2Jawaharlal Nehru University
- Preparation method for cannflavin compounds7 Jul 2026US 12,673,929 B2Deyi Pharmaceutical Ltd.
- Synthesis of small molecules inspired by phomoxanthone A9 Jun 2026US 12,649,725 B2Worcester Polytechnic Institute
- Method for producing benzopyranone compound and novel intermediate used therein19 May 2026US 12,630,503 B2ILAb
- Compositions and methods of suppressing aversiveness of pharmaceuticals and ingestible materials27 Aug 2026US 2026/0248918 A1Monell Chemical Senses Center
- Polymorph of 7,8-dihydroxyflavone, and preparation method therefor27 Aug 2026US 2026/0250260 A1Quanzhou Haichuang Pharmaceutical Technology Co., Ltd.
- Flavanone compounds and their use as flavor modifiers20 Aug 2026US 2026/0240208 A1Firmenich SA
- Flavones, quinolinones, quinazolinones, and aurones, and uses in ck2-mediated diseases16 Jul 2026US 2026/0199350 A1The Salk Institute for Biological Studies
- Fibroblast modulators in stroma-rich tumors9 Jul 2026US 2026/0191817 A1
Most cited
By later US patents
- Composition for treating asthma126US 4,405,598 AFisons Limited · 1983
- Compounds and compositions for delivering active agents116US 5,773,647 AEmisphere Technologies, Inc. · 1998
- Tetracyclic compounds99US 4,024,272 AMerck Patent GmbH · 1977
- 2-(2-Amino-3-methoxyphenyl)-4-oxo-4H-[1]benzopyran for treating proliferative disorders89US 5,525,625 AWarner-Lambert Company · 1996
- Isoflavones and related compounds, methods of preparing and using and antioxidant compositions containing same87US 4,390,559 AZ-L Limited Partnership · 1983