Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7628232 | Rotary-percussion drill with a four-start helical shaft | Olaf Koch, Guenther Domani | 2009-12-08 |
| 6450272 | Rock drill | Udo Hauptmann, Karl Hofmann, Tim Pröls | 2002-09-17 |
| 6116361 | Boring tool | Werner Kleine, Udo Hauptmann, Harald Geiger, Anton Knoller | 2000-09-12 |