Issued Patents 2003
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6667947 | Optical multi-layer information recordating medium | Takanori Maeda, Ikuya Kikuchi, Makoto Sato, Yoshitsugu Araki | 2003-12-23 |
| 6641887 | Optical recording medium | Tetsuya Iida, Takamasa Yoshikawa | 2003-11-04 |
| 6625103 | Aspherical objective lens for reading information from optical disks of different thickness and manufacturing method therefor | — | 2003-09-23 |
| 6594091 | Optical pickup | Takanori Maeda, Ikuya Kikuchi, Makoto Sato | 2003-07-15 |
| 6529339 | Lens and production method therefor | Takanori Maeda, Ikuya Kikuchi, Makoto Sato | 2003-03-04 |