Issued Patents 2003
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6667116 | Magnetic recording media, the manufacturing method for the same, and magnetic recording device | Akira Saito, Tsuyoshi Onitsuka, Tadaaki Oikawa | 2003-12-23 |
| 6667117 | Perpendicular magnetic recording medium and a manufacturing method for the same | Yasushi Sakai, Toyoji Ataka | 2003-12-23 |
| 6589669 | Magnetic recording medium and manufacturing method for the same | Tadaaki Oikawa | 2003-07-08 |
| 6579613 | Recording medium with limited using period | Teruhisa Yokosawa | 2003-06-17 |