Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11713811 | Multi-piece oil scraper ring with reduced friction | Sina Shahverdi, Dirk Barenreuter | 2023-08-01 |
| 11092238 | Multiple-piece oil stripping piston ring with reduced friction | FABIAN RUCH | 2021-08-17 |
| 9719596 | Piston ring for internal combustion engines with increased fatigue strength, and method for producing same | Nigel Gray | 2017-08-01 |