C09B 56/12
Anthraquinone-azo dyes
Official title: Anthraquinone-azo dyes {(from diazotised aminoanthracene C09B29/0022, azo dyes containing hydroxyl groups acylated with polyfunctional anthraquinone derivatives C09B43/26)}
C09B56/12 (Anthraquinone-azo dyes) appears on 22 US grants and 20 published applications in this corpus.
Search patents in C09B- Granted patents
- 22
- Published applications
- 20
- Assignees
- 16
- Inventors
- 44
- Latest grant
- 2 Apr 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 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 | 0 | 0 |
| 1995 | 1 | 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 | 1 | 0 |
| 2005 | 0 | 1 |
| 2006 | 2 | 2 |
| 2007 | 0 | 2 |
| 2008 | 0 | 0 |
| 2009 | 3 | 1 |
| 2010 | 0 | 2 |
| 2011 | 0 | 2 |
| 2012 | 1 | 1 |
| 2013 | 3 | 0 |
| 2014 | 1 | 3 |
| 2015 | 3 | 2 |
| 2016 | 1 | 1 |
| 2017 | 1 | 0 |
| 2018 | 0 | 2 |
| 2019 | 2 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 1 |
| 2024 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Disperse azo dyes, a process for the preparation thereof and the use thereof2 Apr 2024US 11,946,198 B2Huntsman Textile Effects (Switzerland) GmbH
- Cationic direct dyes3 Dec 2019US 10,494,527 B2BASF SE
- Dark quenchers for donor-acceptor energy transfer28 May 2019US 10,301,349 B2Biosearch Technologies, Inc.
- Anthraquinone azo dyes17 Jan 2017US 9,546,279 B2Huntsman International LLC
- Quenching dye for labeling biomolecules and method for preparing the same6 Dec 2016US 9,512,315 B2Dkc Corporation
- Disperse azo dyes, a process for the preparation thereof and the use thereof16 Mar 2023US 2023/0082859 A1Huntsman Advanced Materials (Switzerland) GmbH
- Anthrapyridone Azo Dyes, Their Preparation And Use20 Dec 2018US 2018/0362767 A1DFI Chem GmbH
- Cationic Direct Dyes30 Aug 2018US 2018/0244924 A1BASF SE
- Quenching dye for labeling biomolecules and method for preparing the same15 Sep 2016US 2016/0266130 A1Dkc Corporation
- Dark quenchers for donor-acceptor energy transfer16 Jul 2015US 2015/0197792 A1Biosearch Technologies, Inc.
Most cited
By later US patents
- Dark quenchers for donor-acceptor energy transfer34US 7,019,129 B1Biosearch Technologies, Inc. · 2006
- Electrophotographic printing original plate and electrophotographic plate making process using the printing original plate25US 4,596,754 ARicoh Company, Ltd. · 1986
- Dark quenchers for donor-acceptor energy transfer22US 7,582,432 B2Biosearch Technologies, Inc. · 2009
- Dark quenchers for donor-acceptor energy transfer20US 7,109,312 B2Biosearch Technologies, Inc. · 2006
- Dark quenchers for donor-acceptor energy transfer15US 8,410,255 B2Biosearch Technologies, Inc. · 2013