C09B 62/018
Formazane dyes
C09B62/018 (Formazane dyes) appears on 7 US grants and 0 published applications in this corpus.
Search patents in C09B- Granted patents
- 7
- Published applications
- 0
- Assignees
- 3
- Inventors
- 8
- Latest grant
- 30 Jan 1996
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Formazan-based reactive dyes with at least two reactive groups, and aminophenols30 Jan 1996US 5,488,100 ABASF SE
- Aminophenols useful as intermediates for formazan reactive dyes30 Jan 1996US 5,488,127 ABASF SE
- Formazan-based reactive dyes with at least two reactive groups, and aminophenols29 Aug 1995US 5,446,193 ABASF SE
- Reactive dyes, their preparation and the use thereof2 Jun 1992US 5,118,826 ACiba-Geigy Corporation
- Reactive dyes4 Jun 1991US 5,021,557 ACiba-Geigy Corporation
No published applications in this class yet.
Most cited
By later US patents
- Fiber-reactive, heavy metal-containing formazane dyestuffs16US 4,024,123 A1977
- Stable liquid aqueous composition of a water-soluble fiber-reactive azo dyestuff, containing a buffer substance, the dyestuff having been prepared by diazotization with a nitrite and coupling in the absence of acid7US 4,118,184 AHoechst Aktiengesellschaft · 1978
- Reactive dyes, their preparation and the use thereof4US 5,118,826 ACiba-Geigy Corporation · 1992
- Reactive dyes2US 5,021,557 ACiba-Geigy Corporation · 1991
- Formazan-based reactive dyes with at least two reactive groups, and aminophenols1US 5,446,193 ABASF SE · 1995