Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7338904 | Method for manufacturing single-side mirror surface wafer | Sakae Koyata, Tadashi Denda, Kazushige Takaishi | 2008-03-04 |
| 7226864 | Method for producing a silicon wafer | Sakae Koyata, Kazushige Takaishi, Tohru Taniguchi, Kazuo Fujimaki, Akihiro Kudo | 2007-06-05 |