C09B 43/22
Having the carboxylic group directly attached to an aromatic carbocyclic ring
Official title: having the carboxylic group directly attached to an aromatic carbocyclic ring
C09B43/22 (Having the carboxylic group directly attached to an aromatic carbocyclic ring) appears on 7 US grants and 0 published applications in this corpus.
Search patents in C09B- Granted patents
- 7
- Published applications
- 0
- Assignees
- 4
- Inventors
- 16
- Latest grant
- 6 Sep 1983
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Liquid crystals having pleochroic dyes6 Sep 1983US 4,402,854 ASiemens Aktiengesellschaft
- Liquid crystals having pleochroic dyes14 Dec 1982US 4,363,743 ASiemens Aktiengesellschaft
- Heteryl-azo-phenyl disperse dyestuffs containing a Z-substituted benzolyloxyalkyl radical, wherein Z is 2-cyanovinyl 2-cyanoethyl or 2-chloro-2-cyanoethyl8 Aug 1978US 4,105,653 AProduits Chimiques Ugine Kuhlmann
- P-Aminoazo disperse dyes9 Aug 1977US 4,041,025 ABASF SE
- Phenyl azophenyl dyestuff19 Oct 1976US 3,987,027 AProduits Chimiques Ugine Kuhlmann
No published applications in this class yet.
Most cited
By later US patents
- Liquid crystals having pleochroic dyes41US 4,363,743 ASiemens Aktiengesellschaft · 1982
- Liquid crystals having pleochroic dyes10US 4,402,854 ASiemens Aktiengesellschaft · 1983
- P-Aminoazo disperse dyes7US 4,041,025 ABASF SE · 1977
- Process for the dyeing of synthetic fiber materials from organic solvents5US 3,930,794 AHoechst Aktiengesellschaft · 1976
- Process for the dyeing of synthetic fiber materials from organic solvents3US 3,930,793 AHoechst Aktiengesellschaft · 1976