Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5290947 | Process for the preparation of pyrrole derivates | Gerhard Zoller, Eckard Kujath, Klaus Delpy | 1994-03-01 |
| 5280128 | Process for the preparation of benzothioxanthene dyestuffs | Wolfgang Bauer, Eberhard Grimm, Uwe Nickel, Herbert Wille | 1994-01-18 |