Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7344653 | Method for producing and magnetising a bitumen film containing magnetic powder | Josef Polak, Gerd Mannebach, Ernst Hotz, Joachim Oster | 2008-03-18 |
| 6152259 | Sound deadening laminate | Josef Polak | 2000-11-28 |
| 5823301 | Brake pads and process for their production | Karlheinz Bildner | 1998-10-20 |