Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5287240 | Tape cassette | Osamu Koizumi, Kengo Saito, Kazuo Sasaki | 1994-02-15 |
| 5204796 | Tape cassette with tape tension controlled by grease of a specified range of viscosity | Osamu Koizumi, Kengo Saito, Kazuo Sasaki | 1993-04-20 |
| 5097374 | Tape cassette having tapered guide pins press-fitted into cassette wall and grease lubricant for rollers | Osamu Koizumi, Kengo Saito, Kazuo Sasaki | 1992-03-17 |