Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5701018 | Semiconductor device having parallel connection of an insulated gate bipolar transistor and a diode | Koumei Hanaoka, Naoki Sakurai | 1997-12-23 |
| 5691553 | Semiconductor device and power converter using same | Yasumichi Yasuda, Hiromi Hosoya | 1997-11-25 |
| 5670811 | Vertical insulated gate semiconductor device having high current density and high reliability | Tomoyuki Tanaka, Yasumichi Yasuda, Yasunori Nakano | 1997-09-23 |