Issued Patents All Time
Showing 26–50 of 59 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5102425 | Process for the dyeing and printing of blended fabrics made of polyester and natural fibre materials with cyano-hydroxy-methyl pyridone, azo disperse dye to reduce staining | Klaus Hofmann, Margareta Boos, Reinhard Kuhn | 1992-04-07 |
| 5093307 | Use of water-insoluble monoazo dyes of the formula I | Erika Kunz, Josef Ritter | 1992-03-03 |
| 5071443 | Blue azo dyestuff mixture for strong blue color on hydrophobic fibers | Hubert Kruse, Manfred Hahnke, Margareta Boos, Reinhard Kuhn | 1991-12-10 |
| 5037962 | .beta.-modification of 1-(2,4-dinitro-6-chloro-phenylazo)-2-propionylamino-4-N-ethylamino-5-(2- methoxy-ethoxy)benzene, its preparation and its use | Hubert Kruse, Konrad Opitz, Willi Steckelberg | 1991-08-06 |
| 4985045 | Mixtures of mon-azo dyestuffs for dyeing and printing hydrophobic synthetic fiber materials | Klaus Hofmann | 1991-01-15 |
| 4985043 | Mixtures of monoazo dyes containing halogen and cyano substituents | Manfred Hahnke, Reinhard Kuhn, Margarete Boos | 1991-01-15 |
| 4985044 | Multi-component mixtures of blue disperse azo dyes for the dyeing of synthetic fibers | Manfred Hahnke, Reinhard Kuhn | 1991-01-15 |
| 4950305 | Water-insoluble monoazo dyes, their preparation and use, and mixtures of these monoazo dyes | Margareta Boos, Reinhard Kuhn | 1990-08-21 |
| 4937325 | Process for dyeing and printing synthetic fibers with mixtures of monoazo dyestuffs | Klaus Hofmann, Hiroshi Mitsuhashi, Harutsugu Ushiota, Akiharu Odagiri, Gen Kano +1 more | 1990-06-26 |
| 4908042 | Process for coloring cellulose on polyester with water-insoluble red mono-azo dyes | Manfred Hahnke, Michael Kunze, Albert Bode | 1990-03-13 |
| 4872883 | Mixtures of monoazo dyestuffs | Klaus Hofmann, Manfred Hahnke | 1989-10-10 |
| 4851012 | Mixtures of blue disperse monoazo dyestuffs | Hubert Kruse, Reinhard Kuhn, Margareta Boos | 1989-07-25 |
| 4812143 | Liquid formulations of disperse dyestuffs containing inorganic oxides or silicates for dyeing textile materials | Klaus Hofmann, Erwin Dietz | 1989-03-14 |
| 4795807 | Preparation of azo dyestuffs by diazotization and coupling in the presence of an ester | Friedrich Schophoff, Wolf Weidemuller | 1989-01-03 |
| 4772292 | Mixture of yellow disperse dyestuffs containing pyridone disazo dye | Manfred Hahnke, Albert Bode | 1988-09-20 |
| 4769449 | Red mono-azo water-soluble dye containing cyano, amide and amino substituents | Manfred Hahnke, Michael Kunze, Albert Bode | 1988-09-06 |
| 4582509 | Mixtures of monoazo dyestuffs | Manfred Hahnke, Albert Bode, Kurt Roth, Margarete Boos | 1986-04-15 |
| 4571246 | Process for the production of discharge resist prints on hydrophobic textile materials: hydrogen sulphide salt, polysulpane or thiolate | Theo Stahl, Konrad Mix, Kurt Roth | 1986-02-18 |
| 4567252 | Water-insoluble naphthol monoazo dyestuff | Horst Tappe, Albert Bode, Manfred Hahnke, Kurt Roth | 1986-01-28 |
| 4552953 | Water-insoluble monoazo dyestuffs, their preparation and their use | Klaus Kuhlein, Horst Tappe, Maria Kallay, Uwe Kosubek, Rudolf Lowenfeld | 1985-11-12 |
| 4505856 | Azo dyestuff dischargeable to white | Joachim Ribka, Horst Tappe, Kurt Roth | 1985-03-19 |
| 4472307 | Preparation of anilino azo carbazole dyestuffs prepared by diazotization by nitrosylsulphuric acid in acetic acid | Wolfgang Bodenstedt, Heinz Hanel, Eberhardt Hebestreit, Horst Tappe | 1984-09-18 |
| 4431585 | Water-insoluble azo dyestuffs, processes for their manufacture and their use for dyeing and printing synthetic hydrophobic fiber material | Horst Tappe, Kurt Roth, Hans-Jurgen Weyer, Uwe Kosubek | 1984-02-14 |
| 4430090 | Process for coloring organic solvents, mineral oil products, waxes, plastics and surface coatings with cyano-nitro-amino-azo dyes | Reinhard Hahnle, Joachim Ribka, Helmut Richter | 1984-02-07 |
| 4421516 | Process for preparing discharge resist prints on hydrophobic textile materials | Theo Stahl | 1983-12-20 |