Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5357920 | Cooled multi-component piston for internal combustion engines | Peter Kemnitz, Wolfgang Bierkant | 1994-10-25 |
| 5176051 | Process for machining radial through-slots in piston-ring grooves | — | 1993-01-05 |
| 4704950 | Plunger piston for internal combustion engines | Emil Ripberger, Reiner Ulrich | 1987-11-10 |
| 4638725 | Light alloy piston | Emil Ripberger | 1987-01-27 |
| 4534274 | Piston assembly for internal combustion engines | Emil Ripberger | 1985-08-13 |