Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8951652 | Substrate for magnetic recording medium, magnetic recording medium, method of manufacturing magnetic recording medium, and method of inspecting surface | Koji YUKIMATSU, Yoshihito Sueoka, Junichi Kishimoto | 2015-02-10 |
| 7624594 | Magnetic recording medium substrate and manufacturing method therefor, magnetic recording medium, and magnetic recording and reproducing device | Katsuaki Aida | 2009-12-01 |
| 7239483 | Magnetic disk with specified contact ratio [BH 1.0 nm] and circumferential texturing and magnetic disk apparatus equipped with magnetic disk | Koji Sonoda, Junya Kato, Masato Fukushima | 2007-07-03 |
| 7220447 | Magnetic recording medium, process for producing the same, and magnetic recording and reproducing apparatus | Masato Fukushima, Ryuji Sakaguchi | 2007-05-22 |
| 6821653 | Magnetic recording medium, process for producing the same, and magnetic recording and reproducing apparatus | Masato Fukushima, Ryuji Sakaguchi | 2004-11-23 |