Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4915311 | Roller mill | Heinz Grachtrup, Otto Heinemann, Helmut Krumme, Helmut Lucke, Karl von Greiffenstern | 1990-04-10 |
| 4466750 | Bearing segment for a sliding shoe | Otto Heinemann, Burkhard Heiringhoff, Helmut Lucke, Helmut Krumme | 1984-08-21 |
| 4465383 | Hydrodynamic bearing | Otto Heinemann, Helmut Lucke, Hubert Grothaus, Helmut Krumme, Leonhard Linzel +1 more | 1984-08-14 |
| 4320926 | Hydrostatic bearing apparatus | Otto Heinemann, Helmut Lucke, Burkhard Heiringhoff, Helmut Krumme | 1982-03-23 |