Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7990835 | Optical pickup apparatus, focal-point adjusting method, and optical disc apparatus | Kenji Nagatomi, Katsutoshi Hibino | 2011-08-02 |
| 7969853 | Optical pickup device | Morio Nakatani, Kenji Nagatomi, Yoshiyuki Matsumura | 2011-06-28 |