Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6378835 | Method for producing silicon ingot having directional solidification structure and apparatus for producing the same | Saburo Wakita, Akira Mitsuhashi, Yoshinobu Nakada, Jun Sasaki | 2002-04-30 |
| 6299682 | Method for producing silicon ingot having directional solidification structure and apparatus for producing the same | Saburo Wakita, Akira Mitsuhashi, Yoshinobu Nakada, Jun Sasaki | 2001-10-09 |