C07D 311/80
Dibenzopyrans
Official title: Dibenzopyrans; Hydrogenated dibenzopyrans
C07D311/80 (Dibenzopyrans) appears on 1,240 US grants and 1,290 published applications in this corpus.
Search patents in C07D- Granted patents
- 1,240
- Published applications
- 1,290
- Assignees
- 733
- Inventors
- 3,132
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 33 | 0 |
| 1977 | 20 | 0 |
| 1978 | 18 | 0 |
| 1979 | 13 | 0 |
| 1980 | 14 | 0 |
| 1981 | 14 | 0 |
| 1982 | 8 | 0 |
| 1983 | 7 | 0 |
| 1984 | 10 | 0 |
| 1985 | 8 | 0 |
| 1986 | 14 | 0 |
| 1987 | 12 | 0 |
| 1988 | 5 | 0 |
| 1989 | 7 | 0 |
| 1990 | 15 | 0 |
| 1991 | 17 | 0 |
| 1992 | 12 | 0 |
| 1993 | 16 | 0 |
| 1994 | 17 | 0 |
| 1995 | 23 | 0 |
| 1996 | 17 | 0 |
| 1997 | 24 | 0 |
| 1998 | 18 | 0 |
| 1999 | 14 | 0 |
| 2000 | 21 | 0 |
| 2001 | 21 | 9 |
| 2002 | 23 | 30 |
| 2003 | 25 | 34 |
| 2004 | 21 | 26 |
| 2005 | 8 | 36 |
| 2006 | 15 | 33 |
| 2007 | 18 | 29 |
| 2008 | 25 | 46 |
| 2009 | 17 | 27 |
| 2010 | 16 | 39 |
| 2011 | 25 | 41 |
| 2012 | 24 | 28 |
| 2013 | 27 | 29 |
| 2014 | 29 | 40 |
| 2015 | 31 | 54 |
| 2016 | 28 | 54 |
| 2017 | 56 | 49 |
| 2018 | 43 | 73 |
| 2019 | 58 | 72 |
| 2020 | 77 | 82 |
| 2021 | 57 | 105 |
| 2022 | 44 | 94 |
| 2023 | 53 | 84 |
| 2024 | 53 | 79 |
| 2025 | 41 | 49 |
| 2026 | 28 | 48 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Coumarin-based thermosets and thermoplastics22 Sep 2026US 12,741,950 B1The United States of America as represented by the Secretary of the Navy
- Compound for organic electric element, organic electric element using same, and electronic device thereof15 Sep 2026US 12,735,407 B2Duk San Neolux Co., Ltd.
- Compound, coating composition comprising same, organic light-emitting device using same, and manufacturing method therefor8 Sep 2026US 12,729,312 B2LG Chem.Ltd.
- Tetrahydrococannabinolic acid cocrystals11 Aug 2026US 12,702,675 B2Manoira Corporation
- Quinone protected forms and conjugates4 Aug 2026US 12,697,392 B2Cambridge Enterprise Limited
- Process for producing a cannabis product8 Oct 2026US 2026/0308095 A1
- Methods and Systems for Sensitive and Multiplexed Analysis of Short RNA Sequences8 Oct 2026US 2026/0308668 A1Arizona Board of Regents on behalf of Arizona State University
- Organic electroluminescent element and electronic device1 Oct 2026US 2026/0297107 A1Idemitsu Kosan Co., Ltd.
- Cannabis extracts and uses thereof24 Sep 2026US 2026/0285791 A1Consiglio Nazionale Delle Ricerche (43%)
- Method of purifying cannabinoid components from plant extracts10 Sep 2026US 2026/0265167 A1
Most cited
By later US patents
- 4,7-dichlorofluorescein dyes as molecular probes318US 5,188,934 AApplied Biosystems, LLC · 1993
- Energy transfer dyes with enhanced fluorescence209US 5,945,526 AThe Perkin-Elmer Corporation · 1999
- Sulfonated xanthene derivatives204US 6,130,101 AMolecular Probes, Inc. · 2000
- Novel ether substituted fluorescein polyamino acid compounds as fluorescers and quenchers186US 4,318,846 ASyva Company · 1982
- Certain tricyclic and pentacyclic-hetero nitrogen rhodol dyes164US 5,227,487 AMolecular Probes, Inc. · 1993