Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5587860 | Magnetic disc cartridge including a magnetic disc having a cleaning sheet composed of a non-theroplastic fiber | Nobuhiro Umebayashi, Akira Miyake, Teruhisa Miyata | 1996-12-24 |
| 4897752 | Disk cartridge | Hajime Doi, Toru Yamakawa, Fujio Matsumoto | 1990-01-30 |
| 4895758 | Magnetic recording medium | Akito Sakemoto, Hideo Fujiwara, Akira Miyake | 1990-01-23 |
| 4828925 | Magnetic disc | Akira Miyake, Hitoshi Nagatani, Tsugihiro Doi, Akito Sakemoto | 1989-05-09 |
| 4709816 | Recording disc cartridge | Fujio Matsumoto, Hajime Doi, Masaya Funahashi, Tomizo Taniguchi, Shoichi Sakamoto | 1987-12-01 |
| 4695910 | Recording disc cartridge having an improved hub assembly | Hiroshi Maruyama, Akito Sakemoto, Nobuhiro Umebayashi | 1987-09-22 |
| 4522885 | Magnetic recording medium | Masaya Funahashi, Kenichi Inoue | 1985-06-11 |
| 4223361 | Magnetic recording medium | Hiroshi Zaitsu, Takashi Yamase, Sadao Yamashita | 1980-09-16 |