Issued Patents All Time
Showing 76–83 of 83 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4994696 | Turn-on/off driving technique for insulated gate thyristor | Akio Nakagawa | 1991-02-19 |
| 4959703 | Turn-on/off driving technique for insulated gate thyristor | Akio Nakagawa | 1990-09-25 |
| 4866315 | Turn-on/off driving technique for insulated gate thyristor | Akio Nakagawa | 1989-09-12 |
| 4821083 | Thyristor drive system | Katsuhiko Takigami, Akio Nakagawa, Tomokazu Domon | 1989-04-11 |
| 4791470 | Reverse conducting gate turn-off thyristor device | Takashi Shinohe, Katsuhiko Takigami, Hiromichi Ohashi, Masayuki Asaka | 1988-12-13 |
| 4700466 | Method of manufacturing semiconductor device wherein silicon substrates are bonded together | Akio Nakagawa, Hiromichi Ohashi, Masaru Shimbo | 1987-10-20 |
| 4646121 | Thyristor with a self-protection function for breakover turn-on failure | — | 1987-02-24 |
| 4613381 | Method for fabricating a thyristor | — | 1986-09-23 |