Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11939895 | Internal combustion engine with a crankcase ventilation means | Ralf Bey, Markus Ehrly, Ralf Jans, Christoph Biwer | 2024-03-26 |
| 11028770 | Connecting rod of an internal combustion engine for changing the compression ratio | Martin Koch, Thomas Saupe, Erwin Reichert, Ralf Bey, Christopher Marten +1 more | 2021-06-08 |
| 5794493 | Four-cylinder machine of the reciprocating piston type having balancing means | Christoph Bollig, Jürgen Dick, Bernd Jung, Daniel Perak | 1998-08-18 |
| 5653203 | Reciprocating piston engine having a mass-balancing arrangement | Mathias von Essen, Christoph Bollig | 1997-08-05 |
| 5588407 | Reciprocating piston engine with weight compensation | Mathias von Essen, Christoph Bollig | 1996-12-31 |