C09B 3/06
Preparation from starting materials already containing the benzanthrone nucleus
C09B3/06 (Preparation from starting materials already containing the benzanthrone nucleus) appears on 14 US grants and 3 published applications in this corpus.
Search patents in C09B- Granted patents
- 14
- Published applications
- 3
- Assignees
- 7
- Inventors
- 33
- Latest grant
- 27 Apr 2010
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 3 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 1 |
| 2010 | 1 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 1 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Dyes of improved optical brightness and/or fluorescence and compositions containing them27 Apr 2010US 7,705,144 B2
- Process for the preparation of anthraquinone imides21 Apr 1987US 4,659,831 ACiba-Geigy Corporation
- Free amine-containing polymeric dyes10 May 1983US 4,382,800 ADynapol
- Free amine-containing polymeric dyes13 Jul 1982US 4,339,237 ADynapol
- Brown vat dye and its preparation6 Apr 1982US 4,323,510 ABASF SE
- Assistant dyes for color conversion in lcd displays24 Jun 2021US 2021/0191198 A1Moleculed Ltd.
- Dyes of improved optical brightness and/or fluorescence and compositions containing them2 Apr 2009US 2009/0083911 A1
- Use of Dibenzanthrone and Isodibenzanthrone Derivatives as Marking Substances for Liquids14 Aug 2008US 2008/0194446 A1BASF SE
Most cited
By later US patents
- Dyes of improved optical brightness and/or fluorescence and compositions containing them19US 7,705,144 B22010
- Free amine-containing polymeric dyes18US 4,339,237 ADynapol · 1982
- Water-soluble amine-linked polymeric colorants12US 4,144,252 ADynapol · 1979
- Water-soluble amine-linked polymeric colorants9US 4,051,138 ADynapol · 1977
- Free amine-containing polymeric dyes6US 4,382,800 ADynapol · 1983