Issued Patents All Time
Showing 26–27 of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4626888 | Gate turn-off thyristor | Takahiro Nagano, Tsutomu Yatsuo, Saburo Oikawa | 1986-12-02 |
| 4500903 | Semiconductor GTO switching device with radially elongated cathode emitter regions of increasing length | Tsutomu Yatsuo, Takahiro Nagano, Saburo Oikawa | 1985-02-19 |