Issued Patents 2004
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6821893 | Method of manufacturing a substrate for information recording media | Junji Kurachi, Yasuhiro Saito | 2004-11-23 |
| 6782717 | Method for manufacturing glass substrate of information recording medium | Yasuhiro Saito, Tatsuro Umeyama, Koji Okuhata, Toshiaki Hashimoto | 2004-08-31 |
| 6743529 | Process for producing glass substrate for magnetic recording medium and glass substrate for magnetic recording medium obtained by the same | Yasuhiro Saito, Hiroshi Ikeda, Junji Kurachi | 2004-06-01 |
| 6715318 | Glass substrate for information recording media and manufacturing method thereof | Yasuhiro Saito, Tatsuro Umeyama | 2004-04-06 |