Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5053940 | Extinction blocking for GTOs | — | 1991-10-01 |
| 4920447 | Method for protecting the gate unit for a GTO thyristor | — | 1990-04-24 |
| 4853834 | Device for maintaining the cut-off switching state of a thyristor that can be turned off | — | 1989-08-01 |
| 4682278 | Procedure and device for detecting the non-conducting state of turn-off thyristors | Rainer Marquardt, Theodor Salzmann | 1987-07-21 |
| 4674023 | Method and apparatus for recognizing the cutoff state of a thyristor which can be switched off | Theodor Salzmann | 1987-06-16 |