C09B 43/405
By substituting radicals containing hetero atoms for -so2r radicals and r being
Official title: {by substituting radicals containing hetero atoms for -SO2R radicals and R being hydrocarbon}
C09B43/405 (By substituting radicals containing hetero atoms for -so2r radicals and r being) appears on 4 US grants and 0 published applications in this corpus.
Search patents in C09B- Granted patents
- 4
- Published applications
- 0
- Assignees
- 3
- Inventors
- 10
- Latest grant
- 14 Feb 1984
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Water-insoluble azo dyestuffs, processes for their manufacture and their use for dyeing and printing synthetic hydrophobic fiber material14 Feb 1984US 4,431,585 ACassella Aktiengesellschaft
- Process for the preparation of azo dyestuffs11 Apr 1978US 4,083,846 ABayer Aktiengesellschaft
- 2-Optionally substituted alkyl-and phenylsulfonylphenyl-azo-phenyl dyes and a process for their synthesis6 Sep 1977US 4,046,757 ASandoz Ltd.
- N ,N-diethyl-4-(2,4-dinitro-6-alkylsulfonylphenylazo)-2-alkoxy-5-alkyl-carb onylaminoanilines22 Mar 1977US 4,013,636 ASandoz Ltd.
No published applications in this class yet.
Most cited
By later US patents
- 2-Optionally substituted alkyl-and phenylsulfonylphenyl-azo-phenyl dyes and a process for their synthesis7US 4,046,757 ASandoz Ltd. · 1977
- Process for the preparation of azo dyestuffs6US 4,083,846 ABayer Aktiengesellschaft · 1978
- Water-insoluble azo dyestuffs, processes for their manufacture and their use for dyeing and printing synthetic hydrophobic fiber material5US 4,431,585 ACassella Aktiengesellschaft · 1984