Issued Patents All Time
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, Yasuo Nakata | 2011-08-02 |
| 5737297 | Optical head | Hiroshi Katayama, Nobuo Ogata, Kenji Ikeda | 1998-04-07 |
| 4914621 | Document processing system | — | 1990-04-03 |