D06P 3/3233
Using dis-polyazo premetallised dyes
Official title: {using dis-polyazo premetallised dyes}
D06P3/3233 (Using dis-polyazo premetallised dyes) appears on 5 US grants and 0 published applications in this corpus.
Search patents in D06P- Granted patents
- 5
- Published applications
- 0
- Assignees
- 5
- Inventors
- 12
- Latest grant
- 30 Apr 1996
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 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 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Process for the treatment of skins, hides or shett materials containing collagen by a dense, pressurized fluid30 Apr 1996US 5,512,058 ACentre Technique Cuir Chaussure Maroquinerie
- Liquid dyestuff preparations21 Feb 1995US 5,391,207 ABayer Aktiengesellschaft
- Process for dyeing leather: aqueous bath containing mixture of carbon black and acid dye, direct dye or metal complex dye16 Apr 1991US 5,007,941 ACiba-Geigy Corporation
- Metallized polyazo dyes derived from a coupling component obtained by acidic condensation of formaldehyde with at least one phenolic compound31 Oct 1978US 4,123,428 ASandoz Ltd.
- 2:1 Metal complexes of 2,2',4'-trihydroxy-3,5-dinitroazobenzene bound to a diphenylamine through an azo bridge17 Aug 1976US 3,975,369 ASandoz Ltd.
No published applications in this class yet.
Most cited
By later US patents
- Process for the treatment of skins, hides or shett materials containing collagen by a dense, pressurized fluid22US 5,512,058 ACentre Technique Cuir Chaussure Maroquinerie · 1996
- Metallized polyazo dyes derived from a coupling component obtained by acidic condensation of formaldehyde with at least one phenolic compound9US 4,123,428 ASandoz Ltd. · 1978
- 2:1 Metal complexes of 2,2',4'-trihydroxy-3,5-dinitroazobenzene bound to a diphenylamine through an azo bridge8US 3,975,369 ASandoz Ltd. · 1976
- Process for dyeing leather: aqueous bath containing mixture of carbon black and acid dye, direct dye or metal complex dye8US 5,007,941 ACiba-Geigy Corporation · 1991
- Liquid dyestuff preparations2US 5,391,207 ABayer Aktiengesellschaft · 1995