Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5596217 | Semiconductor device including overvoltage protection diode | Masami Yamaoka | 1997-01-21 |
| 5483097 | Device protecting layer | Hiroshi Ohtsuki, Fumio Ohara | 1996-01-09 |
| 4680608 | Semiconductor device | Yukio Tsuzuki, Masami Yamaoka | 1987-07-14 |
| 4672402 | Semiconductor circuit device including an overvoltage protection element | Masami Yamaoka, Yukio Tsuzuki | 1987-06-09 |