C09B 35/461
D being derived from diaminobenzene
Official title: {D being derived from diaminobenzene}
C09B35/461 (D being derived from diaminobenzene) appears on 7 US grants and 0 published applications in this corpus.
Search patents in C09B- Granted patents
- 7
- Published applications
- 0
- Assignees
- 5
- Inventors
- 16
- Latest grant
- 13 Jun 1995
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Trisazo dyes, inks comprising same and their use in ink jet printing13 Jun 1995US 5,423,906 AZeneca Limited
- Use of metal-free azo _compounds having at least one _6-hydroxypyrid-2-one _coupling component radical and metal _complexes thereof for dyeing _substrates and substrates dyed therewith25 Oct 1988US 4,780,106 ASandoz Ltd.
- Trisazo compounds useful in producing water-resistant ink compositions29 Mar 1988US 4,734,489 ASumitomo Chemical Company, Limited
- Azo compounds having at least one 6-hydroxypyrid-2-one coupling component radical metal complexes thereof and intermediates therefor16 Jun 1987US 4,673,735 ASandoz Ltd.
- Trisazo dyes having a 4-(1-amino-3,6-disulfo-8-hydroxy-7-phenylazonaphthyl-2-azo)phenylazo group linked to a coupling component radical28 Aug 1984US 4,468,348 ASandoz Ltd.
No published applications in this class yet.
Most cited
By later US patents
- Trisazo dyes having a 2,7-(1-amino-3,6-or 4,6-disulfo-8-hydroxynaphthylene) radical9US 4,097,476 ASandoz Ltd. · 1978
- Trisazo compounds useful in producing water-resistant ink compositions9US 4,734,489 ASumitomo Chemical Company, Limited · 1988
- Azo compounds having at least one 6-hydroxypyrid-2-one coupling component radical metal complexes thereof and intermediates therefor8US 4,673,735 ASandoz Ltd. · 1987
- Trisazo dyes, inks comprising same and their use in ink jet printing6US 5,423,906 AZeneca Limited · 1995
- Trisazo or tetrakisazo dyes containing a heterocyclic group5US 4,285,860 ABASF SE · 1981