C09B 33/052
The coupling component being a bis-
Official title: the coupling component being a bis-(naphthol-amine)
C09B33/052 (The coupling component being a bis-) appears on 5 US grants and 0 published applications in this corpus.
Search patents in C09B- Granted patents
- 5
- Published applications
- 0
- Assignees
- 3
- Inventors
- 11
- Latest grant
- 13 Jun 2000
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Monoazocompounds with an indanyl moiety13 Jun 2000US 6,075,131 AZeneca Limited
- Azo compound1 Apr 1997US 5,616,694 AZeneca Limited
- Magenta poly-azo compounds5 Dec 1995US 5,473,053 AZeneca Limited
- Alcohol-soluble dye and ink composition containing the same22 Nov 1994US 5,366,543 AOrient Chemical Industries, Ltd.
- Use of sulfonated polyazo dyes for dyeing leather in brilliant fast red shades5 Jan 1993US 5,176,717 ACiba-Geigy Corporation
No published applications in this class yet.
Most cited
By later US patents
- Azo compound8US 5,616,694 AZeneca Limited · 1997
- Alcohol-soluble dye and ink composition containing the same7US 5,366,543 AOrient Chemical Industries, Ltd. · 1994
- Magenta poly-azo compounds5US 5,473,053 AZeneca Limited · 1995
- Monoazocompounds with an indanyl moiety4US 6,075,131 AZeneca Limited · 2000
- Use of sulfonated polyazo dyes for dyeing leather in brilliant fast red shades3US 5,176,717 ACiba-Geigy Corporation · 1993