Issued Patents All Time
Showing 76–100 of 110 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6621132 | Semiconductor device | Yasuhiko Onishi, Tatsuhiko Fujihira, Susumu Iwamoto, Takahiro Sato | 2003-09-16 |
| 6512268 | Super-junction semiconductor device | — | 2003-01-28 |
| 6475864 | Method of manufacturing a super-junction semiconductor device with an conductivity type layer | Takahiro Sato, Tatsuhiko Fujihira, Kenji Kunihara, Yasuhiko Onishi, Susumu Iwamoto | 2002-11-05 |
| 6465807 | Silicon carbide vertical MOSFET and method for manufacturing the same | — | 2002-10-15 |
| 6303947 | Silicon carbide vertical FET and method for manufacturing the same | — | 2001-10-16 |
| 6294444 | Method for manufacturing silicon carbide semiconductor device | — | 2001-09-25 |
| 6291856 | Semiconductor device with alternating conductivity type layer and method of manufacturing the same | Yasushi Miyasaka, Tatsuhiko Fujihira, Yasuhiko Ohnishi, Susumu Iwamoto | 2001-09-18 |
| 6265326 | Method for forming thermal oxide film of silicon carbide semiconductor device | — | 2001-07-24 |
| 6238980 | Method for manufacturing silicon carbide MOS semiconductor device including utilizing difference in mask edges in implanting | — | 2001-05-29 |
| 6136727 | Method for forming thermal oxide film of silicon carbide semiconductor device | — | 2000-10-24 |
| 6117735 | Silicon carbide vertical FET and method for manufacturing the same | — | 2000-09-12 |
| 6096607 | Method for manufacturing silicon carbide semiconductor device | — | 2000-08-01 |
| 6054352 | Method of manufacturing a silicon carbide vertical MOSFET | — | 2000-04-25 |
| 5963807 | Silicon carbide field effect transistor with increased avalanche withstand capability | — | 1999-10-05 |
| 5895939 | Silicon carbide field effect transistor with increased avalanche withstand capability | — | 1999-04-20 |
| 5844760 | Insulated-gate controlled semiconductor device | Naoki Kumagai | 1998-12-01 |
| 5789311 | Manufacturing method of SiC Schottky diode | Tatsuo URUSHIDANI, Koichi Hashimoto, Shinji Ogino, Yasukazu Seki | 1998-08-04 |
| 5714774 | Two-gate semiconductor power switching device | Masahito Otsuki | 1998-02-03 |
| 5693569 | Method of forming silicon carbide trench mosfet with a schottky electrode | — | 1997-12-02 |
| 5614749 | Silicon carbide trench MOSFET | — | 1997-03-25 |
| 5606183 | Double-gated turn-off thyristor | Masahito Otsuki | 1997-02-25 |
| 5477077 | Semiconductor device and a method for the manufacture thereof | Naoki Kumagai | 1995-12-19 |
| 5444273 | MOSFET controlled thyristor | — | 1995-08-22 |
| 5397905 | Power semiconductor device having an insulated gate field effect transistor and a bipolar transistor | Masahito Otsuki | 1995-03-14 |
| 5384270 | Method of producing silicon carbide MOSFET | — | 1995-01-24 |