Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6782717 | Method for manufacturing glass substrate of information recording medium | Yasuhiro Saito, Kazuishi Mitani, Tatsuro Umeyama, Toshiaki Hashimoto | 2004-08-31 |
| 6749487 | Method of polishing glass substrate for information recording media, and glass substrate for information recording media | Hiromi Nakano, Yoichiro Shimizu | 2004-06-15 |