Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11761118 | Carbon-doped silicon single crystal wafer and method for manufacturing the same | Weifeng QU, Shizuo Igawa | 2023-09-19 |
| 11408092 | Method for heat-treating silicon single crystal wafer | Wei Qu, Tadashi Nakasugi | 2022-08-09 |
| 6140131 | Method and apparatus for detecting heavy metals in silicon wafer bulk with high sensitivity | Kiichiro Asako, Toko Yagi, Yoshinori Hayamizu | 2000-10-31 |