Issued Patents All Time
Showing 26–32 of 32 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5106683 | Magnetic recording medium | Hiroyuki Yamada | 1992-04-21 |
| 5037695 | Magnetic recording medium | Hiroyuki Yamada, Ikuko Yanagiuchi | 1991-08-06 |
| 4643934 | Magnetic recording medium | Hitoshi Azegami | 1987-02-17 |
| 4423452 | Magnetic recording medium | Yoshio Kawakami, Kinji Sasaki | 1983-12-27 |
| 4420408 | Magnetic recording medium | Kinji Sasaki | 1983-12-13 |
| 4363059 | Magnetic tape cassette | Yoneo Matsuzawa, Yoshio Kawakami | 1982-12-07 |
| 4338367 | Magnetic recording tape | Yoshio Kawakami, Yoneo Matsuzawa | 1982-07-06 |