Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5041539 | Preparation of aqueous concentrates of yellow azo and azoxystilbene dyes utilizing alkanolamine salts | Athanassios Tzikas, Paul Herzig | 1991-08-20 |
| 4881402 | Process for the determination of liquid absorption of powdery solids | Klaus-Dieter Schubel, Milan Krizek | 1989-11-21 |
| 4715889 | Quinoline derivatives and their use for controlling undesirable plant growth | Helmut Hagen, Rolf-Dieter Kohler, Bruno Wuerzer | 1987-12-29 |
| 4585460 | Reactive dyes, process for their preparation and use thereof: bis-vinyl or substituted ethyl sulphenyl azo reactive dyes for textiles | Hansrudolf Schwander, Peter Aeschlimann | 1986-04-29 |
| 4522646 | 3,7-Dichloroquinoline derivatives and their use for controlling undesirable plant growth | Helmut Hagen, Bruno Wuerzer | 1985-06-11 |
| 4428858 | Composition based on liquid crystal for electro-optical device | Jacques Cognard, Trung H. Phan | 1984-01-31 |
| 4327018 | Azo dyes and the production and use thereof | Hans Wilhelm Liechti, Kurt Burdeska | 1982-04-27 |
| 4299720 | Liquid crystal mixture | Maged A. Osman, Terry J. Scheffer, Laszlo Revesz | 1981-11-10 |
| 4261909 | Process for the reductive removal of halogen atoms from anthraquinones | Athanassios Tzikas | 1981-04-14 |
| 4182882 | Process for the production of pyranthrones or flavanthrones | Hans Morawietz | 1980-01-08 |