Issued Patents All Time
Showing 1–25 of 25 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7632316 | Reactive dyestuff, method for production thereof and use of the same | Stefan Meier, Uwe Reiher, Werner Russ | 2009-12-15 |
| 7132517 | Water-soluble fiber-reactive disazo dyes, method for producing the same and the use thereof | Werner Russ, Stefan Meier | 2006-11-07 |
| 7105645 | Water-soluble fiber-reactive dyes, method for the production and use thereof | Stefan Meier, Werner Russ | 2006-09-12 |
| 5278292 | Fiber-reactive dyes which contain a ureidoalkylene group | Hartmut Springer, Rolf Gleissner | 1994-01-11 |
| 5028700 | Copper-complex formazan compounds having a fiber-reactive group of the vinylsulfone series, suitable as dyestuffs | — | 1991-07-02 |
| 5015731 | Copper complex formazan compounds containing a cyanamido-S-triazinylamino radical and a fiber-reactive group of the vinylsulfone series, suitable as dyes | Hartmut Springer | 1991-05-14 |
| 4963660 | Process for the reduction of heavy metal ions in excess from aqueous synthesis solutions of water soluble heavy metal complex dyestuffs | Uwe Mrotzeck, Peter Mischke, Werner Russ, Manfred Sittig | 1990-10-16 |
| 4960872 | Water-soluble monoazopyrazolone dyestuffs having fiber reactive groups of the vinylsulfone series | Ludwig Schlafer, Werner Russ | 1990-10-02 |
| 4906736 | Copper complex formazan compounds containing a phenylaminotriazinylamino group with a fiber-reactive group of the vinylsulfone series and an alkyl amino substituent in the phenyl moiety suitable as fiber-reactive dyestuffs | Hartmut Springer, Werner Russ | 1990-03-06 |
| 4898944 | Precursors for the preparation of water-soluble triphendioxazine dyestuffs | Hartmut Springer, Walter Helmling | 1990-02-06 |
| 4895954 | Precursors for synthesis of triphendioxazine dyestuffs | Hartmut Springer, Walter Helmling | 1990-01-23 |
| 4885385 | Sulfonyl containing compounds suitable as precurors for water-soluble fiber-reactive triphendioxazine compounds | Hartmut Springer, Walter Helmling | 1989-12-05 |
| 4851527 | Water-soluble triphendioxazine compounds | Hartmut Springer, Walter Helmling | 1989-07-25 |
| 4851542 | N.sub.1 -substituted 1H-benzytriazole hydroxyethyl sulfone compounds, a process for their preparation and their use for the preparation of dyestudds | Hartmut Springer | 1989-07-25 |
| 4816574 | Water-soluble triphendioxazine compounds | Hartmut Springer, Walter Helmling | 1989-03-28 |
| 4786728 | Water-soluble triphendioxazine compounds | Hartmut Springer, Walter Helmling | 1988-11-22 |
| 4785099 | Water-soluble triphendioxazine compounds | Hartmut Springer, Walter Helmling | 1988-11-15 |
| 4785098 | Water-soluble triphendioxazine compounds | Hermann Fuchs, Hartmut Springer | 1988-11-15 |
| 4782150 | Water-soluble triphendioxazine compounds | Hartmut Springer, Walter Helmling | 1988-11-01 |
| 4774333 | Water-soluble triphendioxazine compounds and sulfonyl-containing precursors thereof, processes for the preparation thereof and use of the triphendioxazines as dyes | Hartmut Springer, Walter Helmling | 1988-09-27 |
| 4757135 | Bicyclic formazan compounds containing a beta-sulfatoethyl-sulfonyl or vinyl sulfonyl group, suitable as fiber reactive dyestuffs | — | 1988-07-12 |
| 4607098 | Bicyclic copper complex formazan compounds having a fiber-reactive group of the vinyl sulfone series, containing a fiber-reactive group suitable as dyestuffs | — | 1986-08-19 |
| 4585459 | Process for preparing liquid low-salt aqueous reactive dyestuff compositions | Konrad Opitz | 1986-04-29 |
| 4370145 | Copper formazan compounds, processes for their preparation and their use as dyestuffs | Ernst Hoyer | 1983-01-25 |
| 4336190 | Copper complex formazan compounds, process for their manufacture and their use as dyestuffs | Ernst Hoyer | 1982-06-22 |