C09B 44/18
Having three nitrogen atoms as the only ring hetero atoms
Official title: having three nitrogen atoms as the only ring hetero atoms
C09B44/18 (Having three nitrogen atoms as the only ring hetero atoms) appears on 20 US grants and 4 published applications in this corpus.
Search patents in C09B- Granted patents
- 20
- Published applications
- 4
- Assignees
- 12
- Inventors
- 29
- Latest grant
- 10 Sep 2019
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 4 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 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 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 0 |
| 2004 | 0 | 2 |
| 2005 | 1 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 1 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 1 | 1 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 1 |
| 2018 | 0 | 0 |
| 2019 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Agents for dyeing keratin fibres, containing at least one dimeric, dicationic azo dye with special substitution pattern10 Sep 2019US 10,406,089 B2Henkel AG & Co. KGaA
- Dicationic 4-aza-1-azoniabicyclo[2.2.2]octanes and agents for colouring keratin-containing fibers8 Oct 2013US 8,551,191 B2Henkel AG & Co. KGaA
- Dyeing composition for keratinous fibers comprising a dicationic diazo dye5 Aug 2008US 7,407,516 B2L'oreal
- Dyeing composition for keratinous fibers comprising a particular dicationic diazo dye17 May 2005US 6,893,471 B2L'oreal
- Ink jet printing method25 Feb 2003US 6,523,950 B1Eastman Kodak Company
- Agents for dyeing keratin fibres, containing at least one dimeric, dicationic azo dye with special substitution pattern21 Sep 2017US 2017/0266093 A1Henkel AG & Co. KGaA
- Dicationic 4-aza-1-azoniabicyclo[2.2.2]octanes and agents for colouring keratin-containing fibers18 Jul 2013US 2013/0180542 A1Henkel AG & Co. KGaA
- Dyeing composition for keratinous fibers comprising a particular dicationic diazo dye14 Oct 2004US 2004/0200009 A1L'oreal
- Dyeing composition for keratinous fibres comprising a particular dicationic diazo dye29 Jul 2004US 2004/0143911 A1L'oreal
Most cited
By later US patents
- Dyeing composition for keratinous fibers comprising a particular dicationic diazo dye30US 6,893,471 B2L'oreal · 2005
- Dyeing composition for keratinous fibers comprising a dicationic diazo dye12US 7,407,516 B2L'oreal · 2008
- Triazole-azo-phenyl cationic dyestuffs8US 4,051,117 ABayer Aktiengesellschaft · 1977
- 1,2,4-Triazole-azo-aniline cationic dyestuffs6US 4,039,539 ABayer Aktiengesellschaft · 1977
- Tetrahydroquinoline azo triazole dyestuffs4US 4,111,929 AImperial Chemical Industries PLC · 1978