Issued Patents All Time
Showing 1–2 of 2 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, Koji Okuhata, Takeo Watanabe | 2010-06-15 |
| 7065984 | Substrate for information recording media and manufacturing method thereof, information recording medium, and starting material glass plate | Masamichi Kezuka, Koji Okuhata, Takeo Watanabe | 2006-06-27 |