Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7150851 | Powder press | Matthias Holthausen, Martin Zingsem, Guido Schromges | 2006-12-19 |
| 4539042 | Preventing an increase of the nitrogen content in molten steel | Hans Gruner, Arnold Pfeiffer, Heinrich-Wilhelm Rommerswinkel | 1985-09-03 |