Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7244686 | Bearings produced from silicon nitride substances containing sintering additives and SiO2 | Gerhard Wotting, Mathias Herrmann, Stefan G. Siegel, Lutz Frassek | 2007-07-17 |