Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12049836 | Valve stem seal comprising a valve rotating device | Dirk Schober, Frank Zwein, Thorsten Matthias, Stefan Kellermann | 2024-07-30 |
| 11788440 | Cover body for valve rotating device, corresponding valve rotating device and method for producing the cover body | ANTONIUS WOLKING, Luthfi Arief | 2023-10-17 |
| 11333046 | Internally cooled valve for an internal combustion engine | Thorsten Matthias, ANTONIUS WOLKING, Fernando Arias | 2022-05-17 |
| 11306625 | Valve rotating device | ANTONIUS WOLKING, Luthfi Arief | 2022-04-19 |