Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4561486 | Method for fabricating polycrystalline silicon wafer | Yasuhiro Maeda, Takashi Yokoyama | 1985-12-31 |
| 4519764 | Apparatus for fabricating polycrystalline silicon wafer | Yasuhiro Maeda, Takashi Yokoyama | 1985-05-28 |