Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8752077 | Optical disc apparatus | Seiji Hamaie, Koji Matsumoto | 2014-06-10 |
| 8640151 | Optical disk apparatus | Koji Matsumoto, Seiji Hamaie | 2014-01-28 |
| 8589960 | Optical disc drive | Yoshiaki Yamauchi, Seiji Hamaie, Ikuo Nishida, Koji Matsumoto | 2013-11-19 |
| 8359607 | Optical disc drive | Yoshiaki Yamauchi, Seiji Hamaie, Ikuo Nishida, Tatsuya Yamasaki | 2013-01-22 |