Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4537731 | Saddle filling member for gas-liquid contact | Reinhard Billet, Rainer Kober, Werner Geipel | 1985-08-27 |
| 4522767 | Annular filling member for gas-liquid contact | Reinhard Billet, Rainer Kober, Werner Geipel | 1985-06-11 |