Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5267227 | Disk storage apparatus with an actuator locking device | — | 1993-11-30 |
| 5218585 | Phase shifting feedback control in an optical disk drive | Henry E. Aviles, Edwin R. Childers, Tetsuya Kokubo, Hiroshi Matsushita, David P. McReynolds | 1993-06-08 |
| 5198933 | Recording medium emergency release mechanism | Hiroshi Matsushita, Kouji Takahashi | 1993-03-30 |