Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7703303 | Magnetic disk glass substrate manufacturing method | Hideki Isono, Shinji Eda, Kazuhiko Maeda, Naohiro Kamiya | 2010-04-27 |
| 7220446 | Management technique of friction coefficient based on surface roughness, substrate for information recording medium, information recording medium and manufacture method thereof | Tomotaka Yokoyama, Hiroshi Tomiyasu, Masatomo Shibui | 2007-05-22 |
| 6706427 | Management technique of friction coefficient based on surface roughness, substrate for information recording medium, information recording medium and manufacture method thereof | Tomotaka Yokoyama, Hiroshi Tomiyasu, Masatomo Shibui | 2004-03-16 |
| 6544893 | Method of manufacturing a glass substrate for an information recording medium, and method of manufacturing an information recording medium | — | 2003-04-08 |
| 6134918 | Method of fabricating glass substrate for magnetic disk and method of fabricating magnetic disk | Koji Takahashi, Shinji Eda | 2000-10-24 |
| 6119483 | Process for producing glass substrate for information recording medium | Koji Takahashi, Kazuhiko Maeda, Shinji Eda, Jun Ozawa, Katsutoshi Ono +1 more | 2000-09-19 |