Issued Patents All Time
Showing 26–27 of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6299682 | Method for producing silicon ingot having directional solidification structure and apparatus for producing the same | Saburo Wakita, Akira Mitsuhashi, Jun Sasaki, Yuhji Ishiwari | 2001-10-09 |
| 5130260 | Method of gettering unintentional mobile impurities in silicon wafer by using a damaged layer exposed to the reverse surface thereof | Hisaaki Suga, Kazuhiro Akiyama, Shunji Ishibashi | 1992-07-14 |