Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6201772 | Cards used for disk reproduction apparatus | — | 2001-03-13 |
| 6002654 | Method and apparatus for disk reproduction, disk and cards used for disk reproduction apparatus | Hitoshi Ogata, Masanao Yoshida | 1999-12-14 |
| 5781515 | Disk information reproduction apparatus and method using avoid band control signals | Hitoshi Ogata, Masanao Yoshida | 1998-07-14 |
| 5285437 | Audio device having control function with use of card | Keimi Fukui, Katsuyuki Matsumoto | 1994-02-08 |