Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6228131 | Dye mixtures comprising water-soluble fiber-reactive azo dyes, preparation thereof and use thereof | Christian Schumacher, Gerhard Lippert, Mieke Schaffeld, Karl Krieger, Dierk Rohrig | 2001-05-08 |
| 6183522 | Dye mixtures comprising water-soluble fiber-reactive azo dyes, preparation thereof and use thereof | Werner Russ, Christian Schumacher | 2001-02-06 |
| 6171348 | Blue dyeing mixtures of fiber-reactive dyestuffs and their use for dyeing fiber material containing hydroxy and/or carboxamide groups | Werner Russ, Andreas von der Eltz, Daniele Negri | 2001-01-09 |
| 6168636 | Dye mixtures of fiber-reactive azo dyes and their use | Christian Schumacher, Birgit Eden, Mieke Schaffeld, Karl Krieger, Dierk Rohrig | 2001-01-02 |
| 6165231 | Dye mixture, process for it's preparation and use thereof | Christian Schumacher, Mieke Schaffeld, Karl Krieger, Dierk Rohrig | 2000-12-26 |
| 5980590 | Dyestuff mixtures of water-soluble fiber-reactive azo dyestuffs, processes for their preparation and their use | Werner Russ, Uwe Mrotzeck | 1999-11-09 |
| 5779739 | Dye mixtures of fiber-reactive azo dyes and their use for dyeing hydroxy-and/or carboxamido-containing fiber material | Andreas von der Eltz, Werner Russ | 1998-07-14 |
| 5704951 | Mixtures of blue-dyeing fiber-reactive dyes and their use for dyeing hydroxy-and/or carboxamido-containing fiber material | Daniele Negri, Andreas von der Eltz, Werner Russ | 1998-01-06 |
| 4916228 | Process for the preparation of 1-hydroxy-2-pyridones | Dieter Reuschling | 1990-04-10 |
| 4797409 | 1-hydroxy-2-pyridones, a process for their preparation, and medicaments which contain them, and intermediates formed in the preparation of the 1-hydroxy-2-pyridones | Gerhard Lohaus, Walter Dittmar, Heinz Hanel, Wolfgang Raether, Dieter Reuschling | 1989-01-10 |