Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D307893 | Magnetic recording disk cartridge | Arthur K. Kato, Osamu Sakurai, Osamu Koizumi | 1990-05-15 |
| 4885652 | Disk cartridge | Masayuki Kuroda | 1989-12-05 |
| 4879621 | Disk restraint | Davis W. Chamberlin, Osamu Koizumi | 1989-11-07 |
| 4875128 | Disc cartridge | Arthur K. Kato, Kiyoshi Ohmori, Keisuke Fujiwara, Yutaka Soda | 1989-10-17 |
| 4843512 | Recording disk centering hub | Larry Dean Moore, David M. Perry | 1989-06-27 |
| 4631609 | Stretched surface recording disk substrate | Leif O. Erickson | 1986-12-23 |