Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6586819 | Sapphire substrate, semiconductor device, electronic component, and crystal growing method | — | 2003-07-01 |
| 6558233 | Wafer polishing method, wafer cleaning method and wafer protective film | Naotaka Toyama, Hideki Munakata, Hisashi Masumura | 2003-05-06 |