Issued Patents All Time
Showing 26–27 of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4742409 | Magnetic disc unit | Masaru Koyahara, Shigeki Koizumi, Nobuhiro Aisawa, Noriyuki Kawamura | 1988-05-03 |
| 4563715 | Head position control device | Noriyuki Kawamura, Nobuhiro Aizawa, Shigeki Koizumi, Masaru Koyahara | 1986-01-07 |