Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8270265 | Optical pickup device and optical disk device | Hideki Yoshinaka, Masaharu Fukakusa, Satoshi Nagata, Eizo Ono | 2012-09-18 |
| 7889620 | Optical pickup device and optical disk device | Masaharu Fukakusa, Hideki Yoshinaka, Satoshi Nagata, Eizo Ono | 2011-02-15 |
| 7738347 | Optical pickup device and optical disk drive | Masaharu Fukakusa, Hiroshi Sato, Eizo Ono | 2010-06-15 |