Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4802045 | Recording tape cartridge | Osamu Yamamoto, Shigeo Sasaki | 1989-01-31 |
| 4757957 | Tape cartridge | Shunji Nakatamari, Takashi Sumida | 1988-07-19 |
| 4735378 | Tape cartridge with an arrangement of a magnetic shielding plate | Kazuaki Urano | 1988-04-05 |
| 4731687 | Tape cartridge | Osamu Yamamoto, Kazuaki Urano, Mutsunori Hamaoka | 1988-03-15 |
| 4337493 | Magnetic recording tape cartridge | — | 1982-06-29 |