C07D 311/78
Ring systems having three or more relevant rings
C07D311/78 (Ring systems having three or more relevant rings) appears on 1,860 US grants and 1,755 published applications in this corpus.
Search patents in C07D- Granted patents
- 1,860
- Published applications
- 1,755
- Assignees
- 984
- Inventors
- 4,396
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 48 | 0 |
| 1977 | 35 | 0 |
| 1978 | 22 | 0 |
| 1979 | 20 | 0 |
| 1980 | 21 | 0 |
| 1981 | 18 | 0 |
| 1982 | 10 | 0 |
| 1983 | 9 | 0 |
| 1984 | 12 | 0 |
| 1985 | 13 | 0 |
| 1986 | 16 | 0 |
| 1987 | 23 | 0 |
| 1988 | 11 | 0 |
| 1989 | 19 | 0 |
| 1990 | 26 | 0 |
| 1991 | 31 | 0 |
| 1992 | 24 | 0 |
| 1993 | 38 | 0 |
| 1994 | 27 | 0 |
| 1995 | 32 | 0 |
| 1996 | 36 | 0 |
| 1997 | 44 | 0 |
| 1998 | 37 | 0 |
| 1999 | 37 | 0 |
| 2000 | 41 | 0 |
| 2001 | 38 | 16 |
| 2002 | 41 | 45 |
| 2003 | 41 | 51 |
| 2004 | 35 | 49 |
| 2005 | 20 | 50 |
| 2006 | 22 | 53 |
| 2007 | 30 | 40 |
| 2008 | 34 | 59 |
| 2009 | 25 | 47 |
| 2010 | 30 | 58 |
| 2011 | 29 | 64 |
| 2012 | 42 | 50 |
| 2013 | 46 | 43 |
| 2014 | 47 | 63 |
| 2015 | 43 | 74 |
| 2016 | 39 | 77 |
| 2017 | 75 | 66 |
| 2018 | 60 | 94 |
| 2019 | 75 | 88 |
| 2020 | 92 | 103 |
| 2021 | 75 | 139 |
| 2022 | 62 | 106 |
| 2023 | 66 | 103 |
| 2024 | 56 | 97 |
| 2025 | 52 | 66 |
| 2026 | 35 | 54 |
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.
- Ring closure of benzoquinones containing an unsaturated side chain using a basic catalyst8 Sep 2026US 12,729,188 B2Dsm IP Assets B.V.
- 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
- 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.
- Photochromic compound, naphthol derivative, curable composition, optical article, lens, and eyeglass1 Oct 2026US 2026/0297421 A1Tokuyama Corporation
- Cannabis extracts and uses thereof24 Sep 2026US 2026/0285791 A1Consiglio Nazionale Delle Ricerche (43%)
Most cited
By later US patents
- 4,7-dichlorofluorescein dyes as molecular probes318US 5,188,934 AApplied Biosystems, LLC · 1993
- Recombinant production of novel polyketides221US 5,672,491 ALeland Stanford Junior University · 1997
- Photochromic naphthopyran compounds213US 5,274,132 ATransitions Optical, Inc. · 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