Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5292672 | Method of manufacturing an insulated gate bipolar transistor | Hajime Akiyama | 1994-03-08 |
| 5182626 | Insulated gate bipolar transistor and method of manufacturing the same | Hajime Akiyama | 1993-01-26 |
| 5027180 | Double gate static induction thyristor | Jun-ichi Nishizawa | 1991-06-25 |
| 4990978 | Semiconductor device | — | 1991-02-05 |
| 4870028 | Method of making double gate static induction thyristor | Jun-ichi Nishizawa | 1989-09-26 |
| 4837608 | Double gate static induction thyristor and method for manufacturing the same | Jun-ichi Nishizawa | 1989-06-06 |
| 4673961 | Pressurized contact type double gate static induction thyristor | Jun-ichi Nishizawa | 1987-06-16 |