Issued Patents 2011
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7920442 | Objective lens, optical pick-up device, and optical disk device | Takashi Haruguchi, Taiichi Mori, Hideki Yoshinaka, Nobuyuki Tokubuchi, Shin Ishibashi +1 more | 2011-04-05 |
| 7920443 | Objective lens, optical pick-up device, and optical disk device | Takashi Haruguchi, Taiichi Mori, Hideki Yoshinaka, Nobuyuki Tokubuchi, Shin Ishibashi +1 more | 2011-04-05 |
| 7898928 | Objective lens and optical pickup device | — | 2011-03-01 |