C09B 1/542
Anthraquinones with aliphatic, cycloaliphatic, araliphatic or aromatic ether groups
Official title: {Anthraquinones with aliphatic, cycloaliphatic, araliphatic or aromatic ether groups}
C09B1/542 (Anthraquinones with aliphatic, cycloaliphatic, araliphatic or aromatic ether groups) appears on 27 US grants and 4 published applications in this corpus.
Search patents in C09B- Granted patents
- 27
- Published applications
- 4
- Assignees
- 16
- Inventors
- 58
- Latest grant
- 26 Oct 2021
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 3 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 3 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 1 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 1 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 0 |
| 2012 | 1 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 1 |
| 2021 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Polyamide molding compositions with improved optical properties and use of colorants therein26 Oct 2021US 11,155,692 B2BASF SE
- Blue colour filters with enhanced contrast3 Apr 2012US 8,148,358 B2BASF SE
- Anthraquinone dyes9 Jan 2007US 7,160,335 B2Ciba Specialty Chemicals Corporation
- Anthraquinone compound and water-based ink-jet recording ink containing the compound5 Oct 2004US 6,800,674 B2Mitsui Chemicals, Inc.
- Color filter grade photosensitive resin coloring composition and color filter using the same19 Oct 1999US 5,968,688 ANippon Shokubai Co., Ltd.
- Polyamide molding compositions with improved optical properties and use of colorants therein29 Oct 2020US 2020/0339778 A1BASF SE
- Blue Colour Filters with Enhanced Contrast9 Sep 2010US 2010/0227199 A1BASF SE
- Anthraquinone dyes18 Aug 2005US 2005/0177958 A1Ciba Specialty Chemicals Corporation
- Anthraquinone compound and water-based ink-jet recording ink containing the compound24 Apr 2003US 2003/0078318 A1Mitsui Chemicals, Inc.
Most cited
By later US patents
- Liquid crystals having pleochroic dyes41US 4,363,743 ASiemens Aktiengesellschaft · 1982
- Composition for liquid crystal color display elements38US 4,360,447 AMitsui Toatsu Chemicals, Inc. · 1982
- Color filter grade photosensitive resin coloring composition and color filter using the same35US 5,968,688 ANippon Shokubai Co., Ltd. · 1999
- Helichromic-smectic liquid crystal compositions and display cells22US 4,514,045 AMinnesota Mining and Manufacturing Company · 1985
- Liquid crystal composition22US 4,588,517 AHitachi, Ltd. · 1986