Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8342905 | Optical disk restoration method and apparatus | Takakazu Miyahara, Kazutoshi Chijiiwa | 2013-01-01 |
| 8045440 | Optical disk cleaning device | Takakazu Miyahara | 2011-10-25 |
| 7857951 | Water purification apparatus | Takakazu Miyahara | 2010-12-28 |
| 7625263 | Optical disk restoration apparatus | Takakazu Miyahara | 2009-12-01 |