Issued Patents All Time
Showing 1–25 of 32 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9806520 | Inrush current limiting circuit | Osamu Kimura, Yasunori Tanaka | 2017-10-31 |
| 9490338 | Silicon carbide semiconductor apparatus and method of manufacturing same | Shinsuke Harada, Kenji Fukuda, Mitsuo Okamoto, Kazuhiro Adachi, Seiji Suzuki | 2016-11-08 |
| 8952391 | Silicon carbide semiconductor device and its manufacturing method | Shinsuke Harada, Kenji Fukuda, Mitsuo Okamoto, Kazuhiro Adachi, Seiji Suzuki | 2015-02-10 |
| 8835933 | Recessed gate-type silicon carbide field effect transistor and method of producing same | Takahiro Nagano, Mitsuo Okamoto, Kenji Fukuda | 2014-09-16 |
| 8003991 | Silicon carbide MOS field effect transistor with built-in Schottky diode and method for fabrication thereof | Shinsuke Harada, Kenji Fukuda, Mitsuo Okamoto | 2011-08-23 |
| 7935628 | Silicon carbide semiconductor device and method for producing the same | Shinsuke Harada, Makoto Katou, Kenji Fukuda | 2011-05-03 |
| 7880173 | Semiconductor device and method of manufacturing same | Kenji Fukuda, Junji Senzaki, Shinsuke Harada, Makoto Kato, Mitsuo Okamoto | 2011-02-01 |
| 7811874 | Method for manufacturing silicon carbide semiconductor device, and silicon carbide semiconductor device | Shinsuke Harada, Makoto Katou, Kenji Fukuda | 2010-10-12 |
| 7728336 | Silicon carbide semiconductor device and method for producing the same | Shinsuke Harada, Mitsuo Okamoto, Kenji Fukuda, Makoto Kato | 2010-06-01 |
| 6750477 | Static induction transistor | Toshiyuki Ohno, Hidekatsu Onose, Saburo Oikawa | 2004-06-15 |
| 6566726 | Semiconductor device and power converter using the same | Hidekatsu Onose, Toshiyuki Ohno, Saburou Oikawa | 2003-05-20 |
| 6384428 | Silicon carbide semiconductor switching device | Toshiyuki Oono, Takayuki Iwasaki | 2002-05-07 |
| 6353236 | Semiconductor surge absorber, electrical-electronic apparatus, and power module using the same | Takayuki Iwasaki, Hidekatsu Onose, Shin Kimura | 2002-03-05 |
| 6180959 | Static induction semiconductor device, and driving method and drive circuit thereof | Takayuki Iwasaki, Toshiyuki Ohno | 2001-01-30 |
| 6169672 | Power converter with clamping circuit | Shin Kimura, Takayuki Iwasaki | 2001-01-02 |
| 5831293 | Semiconductor thyristor switching device and power converter using same | Tetsuo Mizoguchi, Masahiro Nagasu, Hideo Kobayashi | 1998-11-03 |
| 5736753 | Semiconductor device for improved power conversion having a hexagonal-system single-crystal silicon carbide | Toshiyuki Ohno, Yohsuke Inoue, Daisuke Kawase, Yuzo Kozono, Takaya Suzuki | 1998-04-07 |
| 5324967 | Turn off type semiconductor device, method of producing the same and the power conversion apparatus employing the same | Hideo Honma, Yukimasa Satou, Susumu Murakami, Isamu Sanpei, Kenji Yagishita | 1994-06-28 |
| 5021855 | Gate turn-off thyristor | Saburo Oikawa, Yukimasa Satou | 1991-06-04 |
| 4825270 | Gate turn-off thyristor | Yukimasa Satou, Saburo Oikawa, Isamu Sanpei | 1989-04-25 |
| 4691223 | Semiconductor device having high breakdown voltage | Susumu Murakami, Teruyuki Kagami, Masaaki Takahashi | 1987-09-01 |
| 4682199 | High voltage thyristor with optimized doping, thickness, and sheet resistivity for cathode base layer | Naohiro Momma, Masayoshi Naito, Masahiro Okamura | 1987-07-21 |
| 4651189 | Semiconductor device provided with electrically floating control electrode | Takahiro Nagano, Saburo Oikawa, Yukimasa Sato, Shin Kimura, Hiroshi Fukui | 1987-03-17 |
| 4646122 | Semiconductor device with floating remote gate turn-off means | Shin Kimura, Hiroshi Fukui, Hisao Amano, Saburo Oikawa, Takahiro Nagano | 1987-02-24 |
| 4626888 | Gate turn-off thyristor | Takahiro Nagano, Saburo Oikawa, Akira Horie | 1986-12-02 |