Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5167758 | Method of forming polycrystalline silicon layer on semiconductor wafer | Yasuhiro Maeda, Takashi Yokoyama, Ichiro Hide, Takeyuki Matsuyama | 1992-12-01 |
| 4820145 | Polycrystalline silicon wafer tray | Takashi Yokoyama, Ichiro Hide, Takeshi Matsuyama | 1989-04-11 |