Issued Patents 2004
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6706427 | Management technique of friction coefficient based on surface roughness, substrate for information recording medium, information recording medium and manufacture method thereof | Tomotaka Yokoyama, Hiroshi Tomiyasu, Nobuyuki Eto | 2004-03-16 |