Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D466685 | Metal casing and umbrella | — | 2002-12-10 |
| 4344552 | Independent drive for a roller cavity suction apparatus | — | 1982-08-17 |
| 4334884 | Process for the continuous preparation of photographic emulsions | Werner Wilke, Hans Frenken | 1982-06-15 |
| 4276853 | Experimental plant for the coating and drying of material in the form of webs | Hans-Jürgen Hofmann, Werner Zander, Josef Busch | 1981-07-07 |
| 4241023 | Apparatus for the continuous preparation of photographic emulsions | Werner Wilke, Hans Frenken | 1980-12-23 |
| 4221184 | Casting block of stable shape | Karl D. Voss, Willi Wasser | 1980-09-09 |