Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5701019 | Semiconductor device having first and second stacked semiconductor layers, with electrical contact to the first semiconductor layer | Hidetoshi Matsumoto, Kenji Hiruma | 1997-12-23 |
| 5362972 | Semiconductor device using whiskers | Kenji Hiruma, Toshio Katsuyama, Nobutaka Futigami, Hidetoshi Matsumoto, Hiroshi Kakibayashi +3 more | 1994-11-08 |
| 5351128 | Semiconductor device having reduced contact resistance between a channel or base layer and a contact layer | Shigeo Goto, Hidetoshi Matsumoto, Yasunari Umemoto, Yoko Uchida, Kenji Hiruma | 1994-09-27 |