Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4903722 | Extraction valve head for tanks | Holger Jurgensen | 1990-02-27 |
| 4861524 | Apparatus for producing a gas mixture by the saturation method | Gunter Sielaff, Norbert Harder | 1989-08-29 |
| 4805675 | Valves for chemical containers | Helmuth Krauss, Peter Muller, Klaus Kreher | 1989-02-21 |
| 4741457 | Transport container | Helmuth Krauss | 1988-05-03 |
| 4738356 | Container for aggressive liquids | Werner Gunkel | 1988-04-19 |