Issued Patents 2011
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7990834 | Optical pickup device recording and/or reproducing information on and/or from a plurality of kinds of recording media | Tetsuo Ueyama, Osamu Miyazaki, Yukio Watanabe, Tomio Mashiyama | 2011-08-02 |
| 7952966 | Tracking apparatus for optical information reproduction apparatus | Masayoshi Nakamura, Akihiko Nishioka | 2011-05-31 |
| 7894312 | Automatic gain control circuit and signal reproducing device | — | 2011-02-22 |