Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7449221 | Metallic thin film type magnetic recording medium and method of manufacturing thereof | Ryoichi Hiratsuka, Ichiro Kanagawa, Tomoe Ozaki | 2008-11-11 |
| 7214436 | Magnetic recording medium and process for producing same | Ryoichi Hiratsuka, Tomoe Ozaki, Taketoshi Sato, Miho Abiko, Ichiro Kanagawa | 2007-05-08 |
| 7070871 | Metallic thin film type magnetic recording medium and method of manufacturing thereof | Ryoichi Hiratsuka, Ichiro Kanagawa, Tomoe Ozaki | 2006-07-04 |