Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6136091 | Process and apparatus for producing polycrystalline semiconductor ingot | Motoharu Yamazaki | 2000-10-24 |
| 6110274 | Process and apparatus for producing polycrystalline semiconductor | — | 2000-08-29 |
| 5849080 | Apparatus for producing polycrystalline semiconductors | — | 1998-12-15 |
| 5714004 | Process for producing polycrystalline semiconductors | — | 1998-02-03 |
| 4677249 | Photovoltaic device | Masaya Hijikigawa | 1987-06-30 |