C07C 225/32
Of condensed quinone ring systems formed by at least three rings
Official title: of condensed quinone ring systems formed by at least three rings
C07C225/32 (Of condensed quinone ring systems formed by at least three rings) appears on 84 US grants and 39 published applications in this corpus.
Search patents in C07C- Granted patents
- 84
- Published applications
- 39
- Assignees
- 52
- Inventors
- 207
- Latest grant
- 26 Aug 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 9 | 0 |
| 1977 | 10 | 0 |
| 1978 | 3 | 0 |
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 3 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 5 | 0 |
| 1993 | 3 | 0 |
| 1994 | 1 | 0 |
| 1995 | 3 | 0 |
| 1996 | 3 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 1 |
| 2002 | 1 | 1 |
| 2003 | 0 | 3 |
| 2004 | 2 | 2 |
| 2005 | 0 | 2 |
| 2006 | 2 | 2 |
| 2007 | 2 | 0 |
| 2008 | 0 | 1 |
| 2009 | 1 | 5 |
| 2010 | 3 | 4 |
| 2011 | 0 | 1 |
| 2012 | 1 | 1 |
| 2013 | 2 | 1 |
| 2014 | 3 | 1 |
| 2015 | 1 | 3 |
| 2016 | 2 | 0 |
| 2017 | 1 | 0 |
| 2018 | 0 | 1 |
| 2019 | 1 | 1 |
| 2020 | 1 | 2 |
| 2021 | 1 | 2 |
| 2022 | 3 | 1 |
| 2023 | 0 | 0 |
| 2024 | 0 | 2 |
| 2025 | 3 | 1 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Compounds and methods for the treatment of parasitic infections26 Aug 2025US 12,396,969 B2The Board of Trustees of the University of Illinois
- Anthraquinone compound, liquid crystal composition containing said compound, and light-controlling element17 Jun 2025US 12,331,240 B2Nippon Kayaku Kabushiki Kaisha
- Anthraquinone compound, liquid crystal composition containing said compound, and dimming element27 May 2025US 12,312,294 B2Nippon Kayaku Kabushiki Kaisha
- Acetalanthraquinone derivatives useful for cellular staining20 Sep 2022US 11,447,638 B2Biostatus Limited
- Hypocrellin derivative substituted both in a peri-position and in 2-position by amino, preparation method, and application thereof13 Sep 2022US 11,439,707 B2Technical Institute of Physics and Chemistry of the Chinese Academy of Sciences
- Disperse dyes for dyeing polyester fibres8 Oct 2026US 2026/0308841 A1University of Leeds
- Compounds and methods for the treatment of parasitic infections25 Dec 2025US 2025/0387359 A1The Board of Trustees of the University of Illinois
- Anthraquinone compound, liquid crystal composition containing said compound, and dimming element12 Dec 2024US 2024/0409497 A1Nippon Kayaku Kabushiki Kaisha
- Anthraquinone compound, liquid crystal composition containing said compound, and light-controlling element5 Dec 2024US 2024/0400899 A1Nippon Kayaku Kabushiki Kaisha
- Compounds and methods for the treatment of parasitic infections6 Oct 2022US 2022/0313631 A1The Board of Trustees of the University of Illinois
Most cited
By later US patents
- Non-nucleoside linkers for convenient attachment of labels to oligonucleotides using standard synthetic methods234US 5,414,077 AGilead Sciences, Inc. · 1995
- Light-emitting material for organo-electroluminescence device and for organic electroluminescence device which the material is applied37US 6,280,859 B1Toyo Ink Manufacturing Co., Ltd. · 2001
- Methods for dyeing hair with anthraquinone hair dyes having a quaternary ammonium side chain18US 5,520,707 AClairol Incorporated · 1996
- Perylenequinone derivatives and uses thereof17US 8,758,725 B2Quest Pharmatech Inc. · 2014
- 1,4-bis-(amino-hydroxyalkylamino)-anthraquinones for inhibiting protein kinase C15US 5,141,957 ASphinx Pharmaceuticals Corporation · 1992