Issued Patents 2016
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9458934 | Compression piston ring | — | 2016-10-04 |
| 9404578 | Piston ring with chromium solid particle wear-prevention layer and corrosion-resistant flank surface | Christian Herbst-Dederichs, Waldemar Urbatzka, Stefan Duerdoth | 2016-08-02 |
| 9352427 | Method for producing piston rings | — | 2016-05-31 |