C09B 50/06
Bis-formazan dyes
C09B50/06 (Bis-formazan dyes) appears on 4 US grants and 1 published applications in this corpus.
Search patents in C09B- Granted patents
- 4
- Published applications
- 1
- Assignees
- 4
- Inventors
- 16
- Latest grant
- 13 Jul 2004
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 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 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 1 |
| 2004 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Optical recording medium13 Jul 2004US 6,762,008 B2Ricoh Company, Ltd.
- Formazane compounds and method of dyeing using the same25 Nov 2003US 6,653,454 B1Nippon Kayaku Kabushiki Kaisha
- Iron-complexed formazan dyes for polyamide and protein substrates14 Oct 1997US 5,677,434 ANorth Carolina State University
- Metallized bis-formazans12 Jun 1979US 4,158,003 ACiba-Geigy Corporation
Most cited
By later US patents