Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5132767 | Double gate GTO thyristor | Tsuneo Ogura, Akio Nakagama, Tomokazu Domon | 1992-07-21 |
| 4821083 | Thyristor drive system | Tsuneo Ogura, Akio Nakagawa, Tomokazu Domon | 1989-04-11 |
| 4791470 | Reverse conducting gate turn-off thyristor device | Takashi Shinohe, Hiromichi Ohashi, Tsuneo Ogura, Masayuki Asaka | 1988-12-13 |
| 4717940 | MIS controlled gate turn-off thyristor | Takashi Shinohe, Hiromichi Ohashi, Akio Nakagawa | 1988-01-05 |
| 4500907 | Pressure-applied type semiconductor device | Keiko Tokushuku | 1985-02-19 |
| 4392175 | Protecting device for a gate turn-off thyristor | Minami Takeuchi | 1983-07-05 |
| 4358785 | Compression type semiconductor device | Makoto Azuma | 1982-11-09 |