Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8189433 | Optical disk drive device and additional recording method | Kazuo Takahashi | 2012-05-29 |
| 8111604 | Fabrication method of multilayer optical record medium and recording apparatus for multilayered optical record medium | Masakazu Ogasawara, Makoto Sato | 2012-02-07 |