C09B 62/004
Anthracene dyes
Official title: Anthracene dyes {(C09B62/0068 takes precedence)}
C09B62/004 (Anthracene 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
- 6
- Latest grant
- 5 Sep 1989
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 3 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Anthraquinone derivatives and their use as protein absorbents5 Sep 1989US 4,864,018 AImperial Chemical Industries PLC
- Anthraquinone compounds and mixtures thereof4 May 1982US 4,328,159 ACiba-Geigy Corporation
- Anthraquinone compounds17 Nov 1981US 4,301,082 ACiba-Geigy Corporation
- Water-soluble anthraquinone dyes13 Oct 1981US 4,294,768 ACiba-Geigy Corporation
- Novel water-soluble anthraquinone dyes13 Jan 1981US 4,244,691 ACiba-Geigy Corporation
No published applications in this class yet.
Most cited
By later US patents
- Water-soluble anthraquinone dyes3US 4,224,228 ACiba-Geigy Corporation · 1980
- Novel water-soluble anthraquinone dyes3US 4,244,691 ACiba-Geigy Corporation · 1981
- Water-soluble anthraquinone dyes1US 4,294,768 ACiba-Geigy Corporation · 1981
- Anthraquinone compounds1US 4,301,082 ACiba-Geigy Corporation · 1981
- Anthraquinone compounds and mixtures thereof1US 4,328,159 ACiba-Geigy Corporation · 1982