Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6287363 | Method of utilizing dusts produced during the reduction of iron ore | Gunter Schrey, Franz Zettl, Stefan Zettl | 2001-09-11 |
| 6171365 | Process for the production of liquid pig iron or liquid intermediate products of liquid steel and spongy metal | Gunter Schrey, Gerald Rosenfellner | 2001-01-09 |
| 5514203 | Process for producing an iron melt | Leopold Werner Kepplinger, Franz Reufer, Gunter Schrey | 1996-05-07 |