Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4796138 | Shutter in a write protect magnetic disk cartridge | — | 1989-01-03 |
| 4689705 | Counter device for a magnetic recording disk cartridge | Kengo Oishi | 1987-08-25 |
| 4688127 | Magnetic recording disk cartridge with locking member | Kengo Oishi | 1987-08-18 |
| 4672499 | Magnetic disk cartridge including a disk cleaner | Kengo Oishi, Wataru Ueno | 1987-06-09 |
| 4644434 | Shutter member for a magnetic disk cartridge | Kengo Oishi | 1987-02-17 |
| 4622618 | Magnetic recording disk cartridge | Kengo Oishi | 1986-11-11 |
| 4608617 | Magnetic recording disk cartridge | Kengo Oishi | 1986-08-26 |
| 4530017 | Magnetic recording disk cartridge | Kengo Oishi | 1985-07-16 |