Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10094253 | Valve device for a hydraulic circuit and oil pump regulating arrangement | Rolf Lappan, Lukas Romanowski, Turgut Yilmaz | 2018-10-09 |
| 9803772 | Valve device for a hydraulic circuit and oil pump control apparatus | Rolf Lappan, Lukas Romanowski | 2017-10-31 |
| 9784142 | Spring arrangement for a variable valve drive of an internal combustion engine | Karsten Grimm, Martin Nowak, Sabine Siebrandt | 2017-10-10 |
| 9334978 | Valve device for a hydraulic circuit, and oil-pump regulating arrangement | Rolf Lappan, Werner Buse, Lukas Romanowski | 2016-05-10 |
| 9133728 | Fluid pressure reversing valve | Werner Buse, Rolf Lappan, Rolf Dohrmann, Franz-Josef Schnelker | 2015-09-15 |
| 9127780 | Solenoid valve | Franz-Josef Schnelker, Werner Buse, Rolf Lappan, Rolf Dohrmann | 2015-09-08 |
| 9062570 | Infinitely variable pressure-control valve | Werner Buse, Franz-Josef Schnelker, Rolf Dohrmann | 2015-06-23 |