Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4881120 | Conductive modulated MOSFET | Hiromichi Ohashi, Yoshihiro Yamaguchi, Kiminori Watanabe, Thuneo Thukakoshi | 1989-11-14 |
| 4878957 | Dielectrically isolated semiconductor substrate | Yoshihiro Yamaguchi, Kiminori Watanabe, Kazuyoshi Furukama, Kiyoshi Fukuda, Katsujiro Tanzawa | 1989-11-07 |
| 4866315 | Turn-on/off driving technique for insulated gate thyristor | Tsuneo Ogura | 1989-09-12 |
| 4821083 | Thyristor drive system | Tsuneo Ogura, Katsuhiko Takigami, Tomokazu Domon | 1989-04-11 |