C09B 56/10
Formazane-azo dyes
C09B56/10 (Formazane-azo dyes) appears on 3 US grants and 0 published applications in this corpus.
Search patents in C09B- Granted patents
- 3
- Published applications
- 0
- Assignees
- 3
- Inventors
- 4
- Latest grant
- 20 Nov 2001
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
No published applications in this class yet.
Most cited
By later US patents