Issued Patents 2002
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6458728 | Glass-ceramic composition for recording disk substrate | Hideki Nagata, Hideki Kawai, Toshiharu Mori, Kazuhiko Ishimaru | 2002-10-01 |
| 6458729 | Glass-ceramic composition for recording disk substrate | Hideki Nagata, Toshiharu Mori, Hideki Kawai, Akira Sugimoto, Kazuhiko Ishimaru | 2002-10-01 |
| 6458730 | Glass-ceramic composition for recording disk substrate | Hideki Nagata, Toshiharu Mori, Hideki Kawai, Akira Sugimoto, Kazuhiko Ishimaru | 2002-10-01 |