Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5691968 | Optical disk unit | Yuichiro Tomishima | 1997-11-25 |
| 4882639 | Changeover writing circuit for magnetic disk apparatus operable at plural densities | Masahiro Nasu | 1989-11-21 |
| 4805047 | Read/write magnetic disk apparatus operable in plural density modes | Masahiro Nasu | 1989-02-14 |
| 4555738 | Head adjusting disk | Noriaki Murayama | 1985-11-26 |