Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8003580 | Consolidated proppants having high mechanical strength and process for the preparation thereof | Klaus Endres, Bernd Reinhard, Helmut Schmidt | 2011-08-23 |
| 7473521 | Composite mask for producing a diffuser | Takamasa Harada, Fumio Kita, Andreas Zimmermann, Martin Mennig, Peter W. Oliveira +1 more | 2009-01-06 |