Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7401342 | Optical disk conveyance system for preventing scratching upon insertion and removal | Hiroshi Kasama | 2008-07-15 |
| 7308692 | Feed roller, optical disk carrying unit and optical disk recording/playback device | Hiroshi Kasama | 2007-12-11 |