C09B 1/303
Only sulfonated in the anthracene nucleus
Official title: {only sulfonated in the anthracene nucleus}
C09B1/303 (Only sulfonated in the anthracene nucleus) appears on 4 US grants and 0 published applications in this corpus.
Search patents in C09B- Granted patents
- 4
- Published applications
- 0
- Assignees
- 4
- Inventors
- 12
- Latest grant
- 7 Dec 2004
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 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 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Dyes and colorants7 Dec 2004US 6,828,443 B1Henkel Kommanditgesellschaft auf Aktien
- Anthraquinone dyes, process for their preparation and the use thereof2 Apr 1996US 5,504,227 ACiba-Geigy Corporation
- Color diffusion transfer photographic elements17 Apr 1979US 4,149,892 AKonishiroku Photo Industry Co., Ltd.
- Process for the manufacture of aminoanthraquinones28 Feb 1978US 4,076,735 ACiba-Geigy Corporation
No published applications in this class yet.
Most cited
By later US patents
- Process for the manufacture of aminoanthraquinones3US 4,076,735 ACiba-Geigy Corporation · 1978
- Color diffusion transfer photographic elements3US 4,149,892 AKonishiroku Photo Industry Co., Ltd. · 1979
- Anthraquinone dyes, process for their preparation and the use thereof2US 5,504,227 ACiba-Geigy Corporation · 1996
- Dyes and colorants2US 6,828,443 B1Henkel Kommanditgesellschaft auf Aktien · 2004