C09B 35/28
The tetrazo component containing two aryl nuclei linked by at least one
Official title: the tetrazo component containing two aryl nuclei linked by at least one of the groups —CON<, —SO2N<, —SO2—, or —SO2—O—
C09B35/28 (The tetrazo component containing two aryl nuclei linked by at least one) appears on 23 US grants and 8 published applications in this corpus.
Search patents in C09B- Granted patents
- 23
- Published applications
- 8
- Assignees
- 16
- Inventors
- 41
- Latest grant
- 22 Nov 2016
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 3 | 0 |
| 1982 | 0 | 0 |
| 1983 | 3 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 3 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 1 | 1 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 1 | 1 |
| 2009 | 0 | 1 |
| 2010 | 1 | 1 |
| 2011 | 0 | 1 |
| 2012 | 1 | 0 |
| 2013 | 1 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 1 |
| 2016 | 1 | 1 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Water soluble and water fast dyes for ink jet printing22 Nov 2016US 9,499,707 B2Rex-Tone Industries Ltd
- Disazo acid dyes22 Jan 2013US 8,357,210 B2Clariant Finance (BVI) Limited
- Yellow anionic disazo dyes24 Jan 2012US 8,101,731 B2Ciba Specialty Chemicals Corporation
- Yellow anionic disazo dyes25 May 2010US 7,723,494 B2Ciba Specialty Chemicals Corporation
- Yellow anionic disazo dyes11 Mar 2008US 7,341,607 B2Ciba Specialty Chemicals Corporation
- Use Of Disazo Compounds For Color Filters23 Jun 2016US 2016/0178817 A1Clariant International Ltd.
- Water Soluble and Water Fast Dyes for Ink Jet Printing19 Feb 2015US 2015/0050466 A1Ilford Imaging Switzerland GmbH
- Disazo Acid Dyes25 Aug 2011US 2011/0203058 A1Clariant Finance (BVI) Limited
- Yello anionic disazo dyes12 Aug 2010US 2010/0199443 A1Ciba Specialty Chemicals Corporation
- Disazo Acid Dyes21 May 2009US 2009/0126128 A1Clariant Finance (BVI) Limited
Most cited
By later US patents
- Water-soluble disazo dyestuff derived from 4,4-diaminobenzanilide10US 4,250,091 A1981
- Process for dyeing paper7US 5,674,299 ACiba-Geigy Corporation · 1997
- Diazo compounds obtained by coupling acetoacetanilides with tetrazotized diaminobenzanilides6US 4,269,769 AAziende Colori Nazionali Affini ACNA S.p.A. · 1981
- Disazo compounds containing an N,N-bis(2-amino-benzoyl)piperazine derivative as the diazo component5US 4,764,599 ABASF SE · 1988
- Diazopigments containing pyridine derivatives4US 4,079,052 ACiba-Geigy Corporation · 1978