C07C 50/34
The quinoid structure being part of a condensed ring system having three
Official title: the quinoid structure being part of a condensed ring system having three rings
C07C50/34 (The quinoid structure being part of a condensed ring system having three) appears on 36 US grants and 29 published applications in this corpus.
Search patents in C07C- Granted patents
- 36
- Published applications
- 29
- Assignees
- 48
- Inventors
- 155
- Latest grant
- 7 Oct 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 3 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 4 | 0 |
| 1991 | 3 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 2 |
| 2004 | 1 | 2 |
| 2005 | 1 | 1 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 2 |
| 2010 | 2 | 1 |
| 2011 | 0 | 0 |
| 2012 | 0 | 2 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 1 |
| 2020 | 1 | 1 |
| 2021 | 0 | 2 |
| 2022 | 0 | 2 |
| 2023 | 0 | 3 |
| 2024 | 0 | 4 |
| 2025 | 4 | 4 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Aqueous organic-based electrolyte for redox flow battery7 Oct 2025US 12,438,175 B2Kemiwatt
- Compounds and methods for the treatment of parasitic infections26 Aug 2025US 12,396,969 B2The Board of Trustees of the University of Illinois
- Compounds, compositions, methods of using, and methods for preparing compounds5 Aug 2025US 12,377,069 B2The Institute for Stem Cell Biology and Regenerative Medicine (Instem)
- Iron catalyzed highly enantioselective cis-dihydroxylation of quinones22 Apr 2025US 12,281,065 B2Laboratory for Synthetic Chemistry and Chemical Biology Limited
- Compositions and methods for inhibiting metastasis28 Jul 2020US 10,722,528 B2Augusta University Research Institute, Inc.
- Compounds, compositions, methods of using, and methods for preparing compounds2 Jul 2026US 2026/0183260 A1The Institute for Stem Cell Biology and Regenerative Medicine (Instem)
- Compounds and methods for the treatment of parasitic infections25 Dec 2025US 2025/0387359 A1The Board of Trustees of the University of Illinois
- Production of oxygenated diterpenoid compounds21 Aug 2025US 2025/0263763 A1Københavns Universitet
- Anthraquinone-based active material27 Feb 2025US 2025/0070172 A1Mitsubishi Heavy Industries, Ltd.
- Novel quinizarin derivative and preparation method thereof16 Jan 2025US 2025/0019335 A1BenoBio Co., Ltd
Most cited
By later US patents
- Photographic material suited for use in diffusion transfer photography and method of diffusion transfer photography using such material30US 4,232,107 AAgfa-Gevaert · 1980
- Process for the preparation of aromatic ether and thioether compounds23US 4,825,005 ACiba-Geigy Corporation · 1989
- Terpenoid-type quinones for treatment of diabetes23US 5,674,900 AShaman Pharmaceuticals, Inc. · 1997
- Treatment of arthritis and substances for use in such treatment21US 4,244,968 AProter S.p.A. · 1981
- Phenanthrene derivatives20US 5,192,817 AOtsuka Pharmaceutical Co., Ltd. · 1993