Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4363059 | Magnetic tape cassette | Yoshio Kawakami, Norifumi Kajimoto | 1982-12-07 |
| 4338367 | Magnetic recording tape | Yoshio Kawakami, Norifumi Kajimoto | 1982-07-06 |
| 4304807 | Magnetic recording tape | Yoshio Kawakami | 1981-12-08 |