C09B 67/0038
Mixtures of anthraquinones
Official title: {Mixtures of anthraquinones}
C09B67/0038 (Mixtures of anthraquinones) appears on 65 US grants and 40 published applications in this corpus.
Search patents in C09B- Granted patents
- 65
- Published applications
- 40
- Assignees
- 38
- Inventors
- 171
- Latest grant
- 5 Aug 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 4 | 0 |
| 1993 | 1 | 0 |
| 1994 | 3 | 0 |
| 1995 | 2 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 6 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 1 |
| 2002 | 1 | 0 |
| 2003 | 1 | 2 |
| 2004 | 2 | 4 |
| 2005 | 2 | 3 |
| 2006 | 1 | 2 |
| 2007 | 1 | 3 |
| 2008 | 2 | 3 |
| 2009 | 0 | 3 |
| 2010 | 2 | 1 |
| 2011 | 0 | 1 |
| 2012 | 2 | 2 |
| 2013 | 2 | 1 |
| 2014 | 1 | 1 |
| 2015 | 1 | 1 |
| 2016 | 0 | 0 |
| 2017 | 1 | 3 |
| 2018 | 3 | 0 |
| 2019 | 0 | 3 |
| 2020 | 1 | 1 |
| 2021 | 3 | 2 |
| 2022 | 0 | 0 |
| 2023 | 0 | 2 |
| 2024 | 1 | 1 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Liquid-crystal composition containing anthraquinone compound and light-modulating element5 Aug 2025US 12,378,474 B2Nippon Kayaku Kabushiki Kaisha
- Anthraquinone compound, liquid crystal composition for dimming including said compound, and dimming element20 Feb 2024US 11,905,417 B2Nippon Kayaku Kabushiki Kaisha
- Vehicle headlight assembly12 Oct 2021US 11,142,646 B2E. I. Du Pont de Nemours and Company
- Method for producing resin for optical component, resin for optical component, spectacle lens, and spectacles1 Jun 2021US 11,021,563 B2Hoya Lens Thailand Ltd.
- Whitening agents for cellulosic substrates2 Feb 2021US 10,907,047 B2Milliken & Company
- Liquid-Crystal Composition Containing Anthraquinone Compound And Light-Modulating Element2 May 2024US 2024/0141234 A1Nippon Kayaku Kabushiki Kaisha
- Anthraquinone Compound, Liquid Crystal Composition For Dimming Including Said Compound, And Dimming Element26 Oct 2023US 2023/0340268 A1Nippon Kayaku Kabushiki Kaisha
- Vehicle headlight assembly6 Apr 2023US 2023/0104878 A1DuPont Polymers, Inc.
- Inkjet ink composition24 Jun 2021US 2021/0189160 A1Hewlett-Packard Development Company, L. P.
- Black inkjet ink composition27 May 2021US 2021/0155815 A1Hewlett-Packard Development Company, L. P.
Most cited
By later US patents
- Toners for polyesters150US 5,372,864 AEastman Chemical Company · 1994
- Toners for polyesters133US 5,384,377 AEastman Chemical Company · 1995
- Colored plastic lens reducing visual noise for VDT viewers19US 5,080,688 A1992
- Sulfoderivatives of indanthrone, lyotropic liquid crystal system and anisotropic film on their base17US 6,962,734 B2Nitto Denko Corporation · 2005
- Preparation and use of nanosize pigment compositions15US 6,902,613 B2Ciba Specialty Chemicals Corporation · 2005