Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4479829 | Method for making high resistance chromium-free semiconductor substrate body with low resistance active semiconductor layer by surface irradiation | — | 1984-10-30 |
| 4389280 | Method of manufacturing very thin semiconductor chips | Jan-Erik Mueller, Dietrich Ristow | 1983-06-21 |
| 4292643 | High cut-off frequency planar Schottky diode having a plurality of finger-like projections arranged in parallel in a transmission line | Walter Kellner, Dietrich Ristow | 1981-09-29 |
| 4264915 | Charge-coupled component formed on gallium arsenide | Hartwig Bierhenke, Walter Kellner | 1981-04-28 |