Issued Patents All Time
Showing 26–46 of 46 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5747926 | Ferroelectric cold cathode | Masayuki Nakamoto | 1998-05-05 |
| 5714775 | Power semiconductor device | Tomoki Inoue, Ichiro Omura | 1998-02-03 |
| 5286984 | Conductivity modulated MOSFET | Akio Nakagawa, Yoshihiro Yamaguchi, Kiminori Watanabe, Thuneo Thukakoshi | 1994-02-15 |
| 5212396 | Conductivity modulated field effect transistor with optimized anode emitter and anode base impurity concentrations | Akio Nakagawa | 1993-05-18 |
| 5093701 | Conductivity modulated MOSFET | Akio Nakagawa, Yoshihiro Yamaguchi, Kiminori Watanabe, Thuneo Thukakoshi | 1992-03-03 |
| 5086323 | Conductivity modulated MOSFET | Akio Nakagawa, Yoshihiro Yamaguchi, Kiminori Watanabe, Thuneo Thukakoshi | 1992-02-04 |
| 5028974 | Semiconductor switching device with anode shortening structure | Mituhiko Kitagawa, Tsuneo Ogura, Yoshinari Uetake, Yoshio Yokota, Kazuo Watanuki | 1991-07-02 |
| 5006921 | Power semiconductor switching apparatus with heat sinks | Masaru Ishizuka, Yasuyuki Yokono, Asako Matsuura, Yoshio Kamei, Mitsuhiko Kitagawa +2 more | 1991-04-09 |
| 4928155 | Lateral conductivity modulated MOSFET | Akio Nakagawa, Yoshihiro Yamaguchi, Kiminori Watanabe, Thuneo Thukakoshi | 1990-05-22 |
| 4881120 | Conductive modulated MOSFET | Akio Nakagawa, Yoshihiro Yamaguchi, Kiminori Watanabe, Thuneo Thukakoshi | 1989-11-14 |
| 4791470 | Reverse conducting gate turn-off thyristor device | Takashi Shinohe, Katsuhiko Takigami, Tsuneo Ogura, Masayuki Asaka | 1988-12-13 |
| 4782372 | Lateral conductivity modulated MOSFET | Akio Nakagawa, Yoshihiro Yamaguchi, Kiminori Watanabe, Thuneo Thukakoshi | 1988-11-01 |
| 4738935 | Method of manufacturing compound semiconductor apparatus | Masaru Shimbo, Kazuyoshi Furukawa, Kiyoshi Fukuda | 1988-04-19 |
| 4717940 | MIS controlled gate turn-off thyristor | Takashi Shinohe, Katsuhiko Takigami, Akio Nakagawa | 1988-01-05 |
| 4700466 | Method of manufacturing semiconductor device wherein silicon substrates are bonded together | Akio Nakagawa, Tsuneo Ogura, Masaru Shimbo | 1987-10-20 |
| 4689647 | Conductivity modulated field effect switch with optimized anode emitter and anode base impurity concentrations | Akio Nakagawa | 1987-08-25 |
| 4672407 | Conductivity modulated MOSFET | Akio Nakagawa, Yoshihiro Yamaguchi, Kiminori Watanabe, Thuneo Thukakoshi | 1987-06-09 |
| 4649410 | Radiation controllable thyristor with multiple non-concentric amplified stages | — | 1987-03-10 |
| 4595939 | Radiation-controllable thyristor with multiple, non-concentric amplified stages | Yoshihiro Yamaguchi | 1986-06-17 |
| 4546369 | Light-activated amplified gate bi-directional thyristor | Tsuneo Tsukakoshi | 1985-10-08 |
| 4368481 | Light-driven semiconductor device | Yoshihiro Shirasaka | 1983-01-11 |