Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4560642 | Method of manufacturing a semiconductor device | Toshio Yonezawa, Takashi Ajima, Shunichi Hiraki, Yutaka Koshino | 1985-12-24 |
| 4351894 | Method of manufacturing a semiconductor device using silicon carbide mask | Toshio Yonezawa, Takashi Ajima, Shunichi Hiraki, Yutaka Koshino | 1982-09-28 |