Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4872882 | Dyeing formulations of mixtures of red disperse dyes for the washfast dyeing of polyester fibers or mixtures thereof with cellulose fibers: benzo-di-furanone and azo dyes | Manfred Hahnke | 1989-10-10 |
| 4851012 | Mixtures of blue disperse monoazo dyestuffs | Ulrich Buhler, Hubert Kruse, Margareta Boos | 1989-07-25 |
| 4802889 | 2-cyano-4,6-dinitrophenyl mono-azo dyes for polyester and cellulose acetate | Ulrich Bte,uml/u/ hler, Horst Tappe, Albert Bode, Margareta Boss | 1989-02-07 |