Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11959552 | Piston ring system for an internal combustion engine with direct water injection | FABIAN RUCH | 2024-04-16 |
| 11719340 | Three-part oil scraper ring | Florian Böhnke, Thomas Bastuck, Dirk Barenreuter | 2023-08-08 |
| 11493129 | Piston ring and piston with internal groove sealing | FABIAN RUCH | 2022-11-08 |
| 11371610 | Flutter-suppression piston ring | Nigel Gray | 2022-06-28 |
| 10969013 | Compression oil control piston ring | FABIAN RUCH | 2021-04-06 |
| 10969014 | One-piece oil control ring | FABIAN RUCH | 2021-04-06 |
| 10883600 | Two part oil control ring having oil pressure effect ridges | FABIAN RUCH | 2021-01-05 |
| 10495225 | Compression piston ring with profiled section | Peter Esser | 2019-12-03 |
| 10436323 | Piston ring having a groove seal | FRANK NATHEM | 2019-10-08 |
| 10125870 | Piston ring | Joern Proepper | 2018-11-13 |
| 9671019 | Piston ring with a periodically varying groove | FRANK NATHEM | 2017-06-06 |
| 9273629 | Piston ring for two-stroke engines | — | 2016-03-01 |
| 9217507 | Multi-part piston ring | Thomas Schulte-Sasse, Manfred Muller | 2015-12-22 |
| 9174276 | Method of producing a piston ring having embedded particles | Laszlo Pelsoeczy | 2015-11-03 |
| 7494129 | Piston ring | Claus Breuer | 2009-02-24 |
| 6631908 | Compression piston ring | Mario Solia | 2003-10-14 |