Issued Patents 2004
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6809015 | Method for heat treatment of silicon wafers and silicon wafer | Norihiro Kobayashi, Shoji Akiyama, Yuuichi Matsumoto | 2004-10-26 |
| 6805743 | Method for manufacturing single-crystal-silicon wafers | Norihiro Kobayashi, Takatoshi Nagoya | 2004-10-19 |
| 6802899 | Silicon single crystal wafer and manufacturing process therefor | — | 2004-10-12 |
| 6680260 | Method of producing a bonded wafer and the bonded wafer | Shoji Akiyama | 2004-01-20 |