Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7736770 | Substrate for information recording media and manufacturing method thereof, information recording medium, and starting material glass plate | Masamichi Kesuka, Kensuki Matsuno, Takeo Watanabe | 2010-06-15 |
| 7604882 | Substrate for information recording media and manufacturing method thereof, information recording medium, and starting material glass plate | Masamichi Kezuka, Kensuke Matsuno, Takeo Watanabe | 2009-10-20 |
| 7470476 | Glass substrate for magnetic recording medium and method for manufacturing the same | Norimasa Ishii, Kazuishi Mitani, Yasuhiro Saito | 2008-12-30 |
| 7140203 | Method for manufacturing glass substrate of information recording medium | Yasuhiro Saito, Kazuishi Mitani, Tatsuro Umeyama, Toshiaki Hashimoto | 2006-11-28 |
| 7065984 | Substrate for information recording media and manufacturing method thereof, information recording medium, and starting material glass plate | Masamichi Kezuka, Kensuki Matsuno, Takeo Watanabe | 2006-06-27 |
| 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 |