Issued Patents 2011
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7978586 | Optical pickup device | Naoto Shimada, Hiroaki Yamamoto, Masahiko Nishimoto, Takuya Okuda | 2011-07-12 |
| 7969834 | Optical pickup device having a structure providing efficient light usage | Shinichi Hamaguchi, Tatsuya Nakamori, Naoto Shimada | 2011-06-28 |
| 7940631 | Optical pickup device | Naoto Shimada, Hiroaki Yamamoto, Masahiko Nishimoto, Takuya Okuda | 2011-05-10 |
| 7898927 | Optical pickup device | Takuya Okuda, Hiroaki Yamamoto, Masahiko Nishimoto, Naoto Shimada | 2011-03-01 |