Issued Patents 2011
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7978586 | Optical pickup device | Naoto Shimada, Hiroaki Yamamoto, Naoki Nakanishi, Masahiko Nishimoto | 2011-07-12 |
| 7940631 | Optical pickup device | Naoto Shimada, Hiroaki Yamamoto, Naoki Nakanishi, Masahiko Nishimoto | 2011-05-10 |
| 7898927 | Optical pickup device | Hiroaki Yamamoto, Naoki Nakanishi, Masahiko Nishimoto, Naoto Shimada | 2011-03-01 |