Issued Patents 2004
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6790509 | Substrate for information recording medium, information recording medium, and method for controlling surface of substrate for information recording medium | Tomotaka Yokoyama, Takemi Miyamoto, Kouji Takahashi | 2004-09-14 |
| 6759138 | Antiferromagnetically coupled magnetic recording medium with dual-layered upper magnetic layer | Keiji Moroishi, Teiichiro Umezawa, Kenji Ayama | 2004-07-06 |
| 6706427 | Management technique of friction coefficient based on surface roughness, substrate for information recording medium, information recording medium and manufacture method thereof | Tomotaka Yokoyama, Masatomo Shibui, Nobuyuki Eto | 2004-03-16 |