Issued Patents All Time
Showing 1–25 of 44 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11081554 | Insulated gate semiconductor device having trench termination structure and method | Zia Hossain, Syoji MIYAHARA, Yasuyuki Sayama | 2021-08-03 |
| 9735142 | Method of forming a protecting element comprising a first high concentration impurity region separated by an insulating region of a substrate | Mikito Sakakibara, Toshikazu Hirai | 2017-08-15 |
| 8742506 | Protecting element having first and second high concentration impurity regions separated by insulating region | Mikito Sakakibara, Toshikazu Hirai | 2014-06-03 |
| 8450805 | Compound semiconductor switch circuit device | Mikito Sakakibara | 2013-05-28 |
| 7732868 | Semiconductor device | Mikito Sakakibara, Toshikazu Hirai | 2010-06-08 |
| 7701032 | Compound semiconductor device | Yuichi Kusaka, Mikito Sakakibara | 2010-04-20 |
| 7538394 | Compound semiconductor switch circuit device | — | 2009-05-26 |
| 7514727 | Active element and switching circuit device | — | 2009-04-07 |
| 7498616 | Compound semiconductor switch circuit device | Mikito Sakakibara, Yuichi Kusaka, Hidetoshi Ishihara | 2009-03-03 |
| 7358788 | Compound semiconductor switching circuit device | Yuichi Kusaka, Mikito Sakakibara, Hidetoshi Ishihara | 2008-04-15 |
| 7339210 | Compound semiconductor switching circuit device | Mikito Sakakibara | 2008-03-04 |
| 7294900 | Compound semiconductor device and manufacturing method thereof | — | 2007-11-13 |
| 7262470 | Semiconductor device | Mikito Sakakibara, Toshikazu Hiraj | 2007-08-28 |
| 7206552 | Semiconductor switching device | Toshikazu Hirai | 2007-04-17 |
| 7199407 | Semiconductor device | — | 2007-04-03 |
| 7193255 | Semiconductor device with floating conducting region placed between device elements | — | 2007-03-20 |
| 7173291 | Vertical protecting element formed in semiconductor substrate and semiconductor device using the same | — | 2007-02-06 |
| 7005688 | Semiconductor device with impurity layer to prevent depletion layer expansion | Mikito Sakakibara, Yoshibumi Nakajima, Hidetoshi Ishihara | 2006-02-28 |
| 6946891 | Switching circuit device | Mikito Sakakibara, Toshikazu Hirai | 2005-09-20 |
| 6914280 | Switching circuit device | Mikito Sakakibara, Yoshibumi Nakajima, Hidetoshi Ishihara | 2005-07-05 |
| 6903426 | Semiconductor switching device | Toshikazu Hirai, Mikito Sakakibara | 2005-06-07 |
| 6897126 | Semiconductor device manufacturing method using mask slanting from orientation flat | Masahiro Uekawa, Koichi Hirata, Mikita Sakakibara | 2005-05-24 |
| 6894371 | Semiconductor device | Koichi Hirata, Osamu Isaki, Tsutomu Aono, Toshikazu Hirai | 2005-05-17 |
| 6891267 | Semiconductor switching circuit device | Mikito Sakakibara | 2005-05-10 |
| 6882210 | Semiconductor switching device | Hitoshi Tsuchiya, Toshikazu Hirai | 2005-04-19 |