Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8431992 | Semiconductor device including first and second semiconductor regions with increasing impurity concentrations from a substrate surface | Tetsuo Matsuda, Wataru Saito | 2013-04-30 |
| 7936015 | Semiconductor device having trenches filled with a semiconductor having an impurity concentration gradient | Tetsuo Matsuda, Wataru Saito | 2011-05-03 |
| 7898031 | Semiconductor device with tapered trenches and impurity concentration gradients | Tetsuo Matsuda, Wataru Saito | 2011-03-01 |
| 7714385 | Semiconductor device and method of fabricating the same | Hiroyuki Sugaya | 2010-05-11 |
| 7595530 | Power semiconductor device with epitaxially-filled trenches | Tetsuo Matsuda, Wataru Saito | 2009-09-29 |
| 7531871 | Power semiconductor switching element | Ichiro Omura, Wataru Saito, Tsuneo Ogura, Hiromichi Ohashi, Yoshihiko Saito | 2009-05-12 |
| 7488993 | Semiconductor device and method of manufacturing the same | Motoshige Kobayashi, Kazuyuki Saito | 2009-02-10 |
| 7423315 | Semiconductor device and method for manufacturing the same | Hideki Okumura, Hitoshi Kobayashi, Masanobu Tsuchitani, Satoshi Aida, Shigeo Kouzuki +2 more | 2008-09-09 |
| 7391077 | Vertical type semiconductor device | Atsuko Yamashita, Koichi Takahashi, Hideki Okumura, Shingo Sato | 2008-06-24 |
| 7301202 | Semiconductor device and method of manufacturing the same | Shigeo Kouzuki, Hideki Okumura, Wataru Saito, Masaru Izumisawa, Masahiko Shiomi +4 more | 2007-11-27 |
| 7075149 | Semiconductor device and its manufacturing method | Shingo Sato, Atsuko Yamashita, Hideki Okumura | 2006-07-11 |
| 7067870 | Power semiconductor switching element | Ichiro Omura, Wataru Saito, Tsuneo Ogura, Hiromichi Ohashi, Yoshihiko Saito | 2006-06-27 |
| 6750508 | Power semiconductor switching element provided with buried electrode | Ichiro Omura, Wataru Saito, Tsuneo Ogura, Hiromichi Ohashi, Yoshihiko Saito | 2004-06-15 |