Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11725730 | Spacer spring for a three-part oil scraper ring and three-part oil scraper ring having said spacer spring | Dirk Barenreuter | 2023-08-15 |
| 11391237 | Piston for internal combustion engines, and use of a piston for internal combustion engines | Rainer Weiss | 2022-07-19 |
| 9650702 | Nitridable piston rings | — | 2017-05-16 |
| 9174276 | Method of producing a piston ring having embedded particles | Richard Mittler | 2015-11-03 |
| 8882937 | Steel material composition for producing piston rings and cylinder sleeves | — | 2014-11-11 |
| 8709175 | Piston for an internal combustion engine comprising a ring carrier being formed of a cast iron alloy | Wojciech Kolodziej, Marck Skowron, Kazimierz Marszalik, Homi D. Jijina, Klaus Lades | 2014-04-29 |
| 8647448 | Nitratable steel piston rings and steel cylindrical sleeves, and casting method for the production thereof | — | 2014-02-11 |
| 8580048 | Steel material composition for producing piston rings and cylinder sleeves | — | 2013-11-12 |
| 8506727 | Piston rings | — | 2013-08-13 |
| 8317942 | Ledeburite cast iron with a high carbide content and an evenly distributed graphite embodiment | Wilfried Langner, Hans-Henning Zutz, Thomas Gerle, Franz-J. Goebbeis | 2012-11-27 |
| 8317938 | Nitratable steel material composition for producing piston rings and cylindrical sleeves | — | 2012-11-27 |
| 8277576 | Steel material composition for producing piston rings and cylinder lines | — | 2012-10-02 |
| 8241559 | Steel material having a high silicon content for producing piston rings and cylinder sleeves | — | 2012-08-14 |