Issued Patents All Time
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5430147 | Water-soluble anthraquinone compounds, preparation thereof, and use thereof as dyes | Jorg Dannheim, Werner Russ | 1995-07-04 |
| 5227475 | Water-soluble fiber-reactive dyestuffs containing a cyanamido-substituted triazinylamino-grouping, and a process for dyeing with the use of these dyes | Holger M. Buch, Hartmut Springer | 1993-07-13 |
| 4975540 | Water-soluble disazo dyestuffs containing a vinylsulfonyl or b-sulfatoethylsulfonyl-substituted nitrophenylamino group, suitable as dyestuffs | Hartmut Springer | 1990-12-04 |
| 4898933 | Water-soluble fiber-reactive aminotriazine and vinylsulfone containing azo dyestuffs having carboxy- or carbamoyl pyridinium groups | Ludwig Schlafer, Hartmut Springer | 1990-02-06 |
| 4861344 | Reactive water-soluble azo dyes containing carboxy- or carbamoyl-pydridinium groups for dyeing textiles | Ludwig Schlafer, Hartmut Springer | 1989-08-29 |
| 4845202 | Water-soluble disazo compounds containing 3-carboxy or 3-carbamoylpyridium-s-triazinyl groups and fiber-reactive groups of the vinyl sulfone series suitable as dyestuffs | Ludwig Schlafer, Hartmut Springer | 1989-07-04 |
| 4806127 | Water-soluble disazo compounds, containing triazinyl pyridinium group processes for their preparation and their use for dyeing cellulose | Ludwig Schlafer, Hartmut Springer | 1989-02-21 |
| 4719053 | Beta-chloroethylsulfonylmethyl-benzoic halides as intermediates | Ludwig Schlafer | 1988-01-12 |
| 4689050 | Mixtures of blue disperse azo dyestuffs for dyeing synthetic fibers | Manfred Hahnke, Reinhard Kuhn, Rudolf Schickfluss | 1987-08-25 |
| 4552699 | Process for the preparation of 3-acylaminoanilines | Theodor Grewer | 1985-11-12 |
| 4473498 | Water-soluble, fiber-reactive organic dyestuffs containing a .beta.-chloro-ethylsulfonyl-methyl-benzoic acid amide group | Ludwig Schlafer | 1984-09-25 |
| 4430090 | Process for coloring organic solvents, mineral oil products, waxes, plastics and surface coatings with cyano-nitro-amino-azo dyes | Ulrich Buhler, Joachim Ribka, Helmut Richter | 1984-02-07 |
| 4422854 | Transfer printing support, process for the manufacture thereof, with blue azo dye:di-cyano-nitro-phenyl-azo aniline | Manfred Schneider, Claus Schuster, Rudolf Schickfluss | 1983-12-27 |
| 4381262 | Water-insoluble azo dyestuffs, their manufacture and their use | Ulrich Buhler, Dieter Cornelius, Rudolf Lowenfeld, Uwe Kosubek, Rudolf Schickfluss | 1983-04-26 |
| 4257943 | Disperse azo dyestuffs and process for preparation and their use | — | 1981-03-24 |