Issued Patents 2003
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6576353 | Glass substrate for use as information recording medium and method of manufacturing such glass substrate | Kazuishi Mitani, Yasuhiro Saito, Koichi Ataka, Akihiro Koyama, Nobuyuki Yamamoto +1 more | 2003-06-10 |
| 6550278 | Method of manufacturing glass substrate for use as information recording medium | Kazuishi Mitani, Yasuhiro Saito, Koichi Ataka, Akihiro Koyama, Nobuyuki Yamamoto +1 more | 2003-04-22 |
| 6547980 | Glass substrate for information recording medium, manufacturing method thereof, and information recording medium | Akihiro Koyama, Nobuyuki Yamamoto, Yasuhiro Saito, Kazuishi Mitani, Koichi Ataka +1 more | 2003-04-15 |