Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4787986 | Process and apparatus for melting silicon powder | Josef Dietl | 1988-11-29 |
| 4515600 | Process for the removal of the slag portion from molten mixtures of slag and silicon using a semipermeable separating wall | Josef Dietl | 1985-05-07 |
| 4457903 | Semicontinuous process for the production of pure silicon | Josef Dietl, Claus Holm, Michael Wohlschlager | 1984-07-03 |