Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12163592 | Oil control ring | Thomas Bastuck, Markus Kellner, Eugen Haaf | 2024-12-10 |
| 11078868 | Piston ring | Markus Kellner | 2021-08-03 |
| 9638321 | Method for producing an oil scraper piston ring | Klaus Meyer | 2017-05-02 |