C09B 44/12
Having one nitrogen atom as the only ring hetero atom
Official title: having one nitrogen atom as the only ring hetero atom
C09B44/12 (Having one nitrogen atom as the only ring hetero atom) appears on 19 US grants and 17 published applications in this corpus.
Search patents in C09B- Granted patents
- 19
- Published applications
- 17
- Assignees
- 10
- Inventors
- 31
- Latest grant
- 3 Dec 2019
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 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 | 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 | 3 |
| 2005 | 1 | 0 |
| 2006 | 1 | 4 |
| 2007 | 2 | 1 |
| 2008 | 3 | 3 |
| 2009 | 0 | 1 |
| 2010 | 1 | 2 |
| 2011 | 1 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 1 |
| 2017 | 1 | 0 |
| 2018 | 1 | 2 |
| 2019 | 1 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Cationic direct dyes3 Dec 2019US 10,494,527 B2BASF SE
- Method of coloring hair with washfast yellow imidazolium direct dye compounds20 Mar 2018US 9,918,919 B1Noxell Corporation
- Compound for generating second harmonic of light, dye composition for generating second harmonic of light, and cell examination method18 Jul 2017US 9,709,555 B2Keio University
- Azo quinolinium compounds comprising a disulphide/thiol unit, compositions containing same, process for dyeing keratin fibres and device28 Jun 2011US 7,967,872 B2L'oreal
- Tricationic dyes14 Sep 2010US 7,794,509 B2Ciba Corporation
- Cationic Direct Dyes30 Aug 2018US 2018/0244924 A1BASF SE
- Method of Coloring Hair with Washfast Yellow Imidazolium Direct Dye Compounds22 Mar 2018US 2018/0078477 A1Noxell Corporation
- Compound for generating second harmonic of light, dye composition for generating second harmonic of light, and cell examination method28 Apr 2016US 2016/0116460 A1Keio University
- Azo quinolinium compounds comprising a disulphide/thiol unit, compositions containing same, process for dyeing keratin fibres and device21 Oct 2010US 2010/0263139 A1L'oreal
- Tricationic dyes21 Jan 2010US 2010/0011518 A1Ciba Corporation
Most cited
By later US patents
- Azo dyes derived from 3-amino pyridine in hair dye compositions80US 4,025,301 ASociete Anonyme dite: L'Oreal · 1977
- Dyeing composition for keratinous fibers comprising a particular dicationic diazo dye30US 6,893,471 B2L'oreal · 2005
- Composition for the dyeing of human keratinous fibres comprising a monocationic monoazo dye18US 7,077,873 B2L'oreal · 2006
- Dyeing composition for keratinous fibers comprising a dicationic diazo dye12US 7,407,516 B2L'oreal · 2008
- Tricationic dyes12US 7,794,509 B2Ciba Corporation · 2010