Issued Patents All Time
Showing 1–25 of 25 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10347725 | Semiconductor device that facilitates a reduction in the occurrences of cracking in a semiconductor layer accompanying thermal stress | Akihiko Nobukuni, Hirofumi OKI | 2019-07-09 |
| 9972618 | Semiconductor device | Hideki Haruguchi | 2018-05-15 |
| 8791568 | Semiconductor device | Seiya NAKANO | 2014-07-29 |
| 8294244 | Semiconductor device having an enlarged emitter electrode | Kenji Suzuki | 2012-10-23 |
| 8178947 | Semiconductor device | Tetsuo Takahashi | 2012-05-15 |
| 7986003 | Semiconductor device and manufacturing method thereof | Shinji Aono, Hideki Takahashi, Junichi Moritani | 2011-07-26 |
| 7768101 | Semiconductor device having an insulated gate bipolar transistor and a free wheel diode | Kenji Suzuki, Hideki Takahashi | 2010-08-03 |
| 7705398 | Semiconductor device preventing recovery breakdown and manufacturing method thereof | Mitsuru Kaneda, Hideki Takahashi | 2010-04-27 |
| 7211837 | Insulated gate semiconductor device | Hideki Takahashi, Chihiro Tadokoro | 2007-05-01 |
| 6781200 | Insulated gate semiconductor device for realizing low gate capacity and a low short-circuit current | Youichi Ishimura | 2004-08-24 |
| 6734497 | Insulated gate bipolar transistor, semiconductor device, method of manufacturing insulated-gate bipolar transistor, and method of manufacturing semiconductor device | Hideki Takahashi, Mitsuharu Tabata | 2004-05-11 |
| 6709914 | Manufacturing process of pn junction diode device and pn junction diode device | Shinichi Ishizawa | 2004-03-23 |
| 6683348 | Insulated gate bipolar semiconductor device transistor with a ladder shaped emitter | Hideki Haruguchi | 2004-01-27 |
| 6680513 | Semiconductor device | — | 2004-01-20 |
| 6633473 | Overcurrent control circuit of power semiconductor device | — | 2003-10-14 |
| 6541826 | Field effect semiconductor device and its production method | Toru Iwagami | 2003-04-01 |
| 6486523 | Power semiconductor device with temperature detector | — | 2002-11-26 |
| 6472693 | Semiconductor device and method of manufacturing the same | Hideki Takahashi | 2002-10-29 |
| 6229196 | Semiconductor device and fabrication method thereof | Nobuyasu Shishido, Mitsuyoshi Takeda | 2001-05-08 |
| 5945691 | Semiconductor device for preventing destruction during a turn-off state | Mitsuyoshi Takeda, Noriyuki Soejima | 1999-08-31 |
| 5729032 | Field effect type semiconductor device and manufacturing method thereof | Youichi Ishimura | 1998-03-17 |
| 5489788 | Insulated gate semiconductor device with improved short-circuit tolerance | Hiroshi Yamaguchi, Hiroyasu Hagino | 1996-02-06 |
| 5451531 | Method of fabricating an insulated gate semiconductor device | Hiroshi Yamaguchi, Hiroyasu Hagino | 1995-09-19 |
| 5355003 | Semiconductor device having stable breakdown voltage in wiring area | — | 1994-10-11 |
| 5321281 | Insulated gate semiconductor device and method of fabricating same | Hiroshi Yamaguchi, Hiroyasu Hagino | 1994-06-14 |