C09B 5/48
Bis-anthraquinonediazines
Official title: Bis-anthraquinonediazines (indanthrone)
C09B5/48 (Bis-anthraquinonediazines) appears on 20 US grants and 12 published applications in this corpus.
Search patents in C09B- Granted patents
- 20
- Published applications
- 12
- Assignees
- 19
- Inventors
- 59
- Latest grant
- 30 Mar 2021
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 0 | 0 |
| 2005 | 1 | 2 |
| 2006 | 0 | 0 |
| 2007 | 1 | 1 |
| 2008 | 0 | 3 |
| 2009 | 1 | 1 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 1 | 1 |
| 2013 | 0 | 0 |
| 2014 | 1 | 1 |
| 2015 | 1 | 0 |
| 2016 | 0 | 1 |
| 2017 | 0 | 0 |
| 2018 | 1 | 0 |
| 2019 | 0 | 1 |
| 2020 | 0 | 0 |
| 2021 | 1 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Coatable grey polarizer30 Mar 2021US 10,962,696 B2Light Polymers Holding
- Method for producing halogenated organic pigment, halogenated organic pigment obtained by the production method, and colored composition comprising the same18 Dec 2018US 10,155,867 B2Toyo Ink Sc Holdings Co., Ltd.
- Organic colouring agents and coloured polymer compositions with a high stability to weathering15 Dec 2015US 9,212,272 B2Bayer MaterialScience AG
- Organic colouring agents and coloured polymer compositions with a high stability to weathering4 Feb 2014US 8,641,784 B2Bayer MaterialScience AG
- Dichroic dye for polarization film, composition comprising the same for polarization film, method for forming polarization plate and polarization plate prepared thereby12 Jun 2012US 8,197,708 B2LG Chem.Ltd.
- Coatable grey polarizer1 Aug 2019US 2019/0235144 A1Light Polymers Holding
- Method for producing halogenated organic pigment, halogenated organic pigment obtained by the production method, and colored composition comprising the same23 Jun 2016US 2016/0177100 A1Toyo Ink Sc Holdings Co., Ltd.
- Organic colouring agents and coloured polymer compositions with a high stability to weathering1 May 2014US 2014/0121309 A1Bayer MaterialScience AG
- Organic colouring agents and coloured polymer compositions with a high stability to weathering21 Jun 2012US 2012/0152150 A1Bayer MaterialScience AG
- Dichroic dye for polarization film, composition comprising the same for polarization film, method for forming polarization plate and polarization plate prepared thereby26 Nov 2009US 2009/0290214 A1LG Chem.Ltd.
Most cited
By later US patents
- Method and materials for thermostable and lightfast dichroic light polarizers82US 5,739,296 ARussian Technology Group · 1998
- Method for thermostable and lightfast dichroic light polarizers54US 6,174,394 B1Optiva, Inc. · 2001
- Pigment compositions41US 4,310,359 AToyo Ink Manufacturing Co., Ltd. · 1982
- Colored composition for color filter and display using color filters formed of the colored composition18US 7,311,953 B2Hitachi Displays, Ltd. · 2007
- Sulfoderivatives of indanthrone, lyotropic liquid crystal system and anisotropic film on their base17US 6,962,734 B2Nitto Denko Corporation · 2005