Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6586044 | Method for manufacturing a magnetic hard disk having concentric magnetic tracks with flat surface | Hiroto Takeshita, Wataru Yamagishi | 2003-07-01 |
| 6583957 | Magnetic hard disk having concentric magnetic tracks with flat surface and fabrication method thereof | Hiroto Takeshita, Wataru Yamagishi | 2003-06-24 |