Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6054199 | Optical recording medium | Toshinori Sugiyama, Masashi Suenaga, Hitoshi Watanabe, Hirofumi Sukeda, Hisataka Sugiyama | 2000-04-25 |
| 5180595 | Metal mold for resin substrate for an optical recording medium | — | 1993-01-19 |