Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9093100 | Magnetic recording medium including tailored exchange coupling layer and manufacturing method of the same | Yoshiaki Sonobe | 2015-07-28 |
| 8634155 | Thermally assisted magnetic recording disk with ion-implant facilitated non-magnetic regions, manufacturing method thereof, and magnetic recording method | Yoshiaki Sonobe | 2014-01-21 |
| 8605388 | Magnetic recording medium with guard layer between auxiliary and magnetic recording layers and manufacturing method of the magnetic recording medium | Yoshiaki Sonobe, Tadashi Tomonaga | 2013-12-10 |
| 8414966 | Magnetic recording medium and manufacturing method of the same | Yoshiaki Sonobe | 2013-04-09 |