Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6345952 | Steam turbine | Heinrich Oeynhausen, Wilfried Ulm, Ralf Bell, Ulrich Capelle, Jan-Erik Mühle +2 more | 2002-02-12 |
| 6305901 | Steam turbine | Ralf Bell, Ulrich Capelle, Armin Drosdziok, Jan-Erik Mühle, Ingo Stephan +1 more | 2001-10-23 |