Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4851628 | Method for the crucible-free floating zone pulling of semiconductor rods and an induction heating coil therefor | Wilfried Ammon, Wolfgang Hensel | 1989-07-25 |
| 4749837 | Induction heating coil for the floating zone pulling of crystal rods | Wilfried von Ammon | 1988-06-07 |