C09B 44/02
Containing ammonium groups not directly attached to an azo group
Official title: containing ammonium groups not directly attached to an azo group
C09B44/02 (Containing ammonium groups not directly attached to an azo group) appears on 162 US grants and 25 published applications in this corpus.
Search patents in C09B- Granted patents
- 162
- Published applications
- 25
- Assignees
- 38
- Inventors
- 177
- Latest grant
- 19 May 2020
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 17 | 0 |
| 1977 | 15 | 0 |
| 1978 | 10 | 0 |
| 1979 | 4 | 0 |
| 1980 | 14 | 0 |
| 1981 | 10 | 0 |
| 1982 | 3 | 0 |
| 1983 | 2 | 0 |
| 1984 | 8 | 0 |
| 1985 | 8 | 0 |
| 1986 | 3 | 0 |
| 1987 | 11 | 0 |
| 1988 | 5 | 0 |
| 1989 | 3 | 0 |
| 1990 | 4 | 0 |
| 1991 | 4 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 4 | 0 |
| 2001 | 0 | 0 |
| 2002 | 2 | 0 |
| 2003 | 0 | 0 |
| 2004 | 1 | 4 |
| 2005 | 1 | 0 |
| 2006 | 1 | 2 |
| 2007 | 3 | 2 |
| 2008 | 2 | 2 |
| 2009 | 1 | 0 |
| 2010 | 1 | 1 |
| 2011 | 0 | 1 |
| 2012 | 0 | 2 |
| 2013 | 0 | 1 |
| 2014 | 2 | 1 |
| 2015 | 3 | 2 |
| 2016 | 2 | 2 |
| 2017 | 2 | 2 |
| 2018 | 1 | 2 |
| 2019 | 2 | 1 |
| 2020 | 1 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Thiophene azo dyes and laundry care compositions containing the same19 May 2020US 10,655,091 B2The Procter & Gamble Company
- Cationic direct dyes3 Dec 2019US 10,494,527 B2BASF SE
- Thiophene azo dyes and laundry care compositions containing the same8 Oct 2019US 10,435,651 B2The Procter & Gamble Company
- Thiophene azo dyes and laundry care compositions containing the same2 Jan 2018US 9,856,439 B2The Procter & Gamble Company
- Photoreactive synthetic regulator of protein function and methods of use thereof27 Jun 2017US 9,688,617 B2The Regents of the University of California
- Thiophene azo dyes and laundry care compositions containing the same14 Nov 2019US 2019/0345415 A1The Procter & Gamble Company
- Cationic Direct Dyes30 Aug 2018US 2018/0244924 A1BASF SE
- Thiophene azo dyes and laundry care compositions containing the same8 Mar 2018US 2018/0066215 A1The Procter & Gamble Company
- Colored food11 May 2017US 2017/0130179 A1Suntory Holdings Limited
- Thiophene azo dyes and laundry care compositions containing the same12 Jan 2017US 2017/0009186 A1The Procter & Gamble Company
Most cited
By later US patents
- Indazole-azo phenyl compounds33US 3,935,183 AImperial Chemical Industries PLC · 1976
- Monoazo and disazo dyes containing at least one sulfo group and at least two basic or cationic groups24US 4,273,707 ASandoz Ltd. · 1981
- Basic azo and non-azo compounds having one or two disubstituted 1,3,5-triazine rings each of which is linked through a bridging radical to the 1-position of a pyrazole ring22US 4,686,285 ASandoz Ltd. · 1987
- Monoazo dyes containing at least one sulfo group and at least two basic or cationic groups21US 4,363,761 ASandoz Ltd. · 1982
- Cationic azo dyes based on aminobenzoic acid21US 6,048,968 ABASF SE · 2000