Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4242094 | Dyeing preparations and their use for preparing developing dyes | Erich Feess | 1980-12-30 |
| 4212646 | Process for the printing of mixed fabrics of polyester and cellulose fibers | Horst Curtius, Erich Feess | 1980-07-15 |
| 4212648 | Process for the printing of cellulose fiber fabrics | Horst Curtius, Erich Feess | 1980-07-15 |
| 4201547 | Process for the preparation of azo dyestuffs on fiber materials consisting of, or containing, cellulose fibers | Erich Feess, Hartmut Springer, Paul Karacsonyi, Horst Curtius | 1980-05-06 |