Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7715300 | Diffraction element, objective lens unit, optical pickup and optical disc apparatus | Motoo Aiba, Kyu Kanno, Jin Sato, Takatoshi Yamada | 2010-05-11 |
| 7463430 | Diffraction element, objective lens unit, optical pickup, optical disc apparatus and design method for diffraction element | Takatoshi Yamada, Jin Sato, Kyu Kanno, Motoo Aiba | 2008-12-09 |
| 6783707 | Lens, manufacturing method thereof, and optical pickup | Hiroyuki Ueda, Shinji Saito, Hiroyuki Sakakibara | 2004-08-31 |
| 6215591 | Lens manufacturing method thereof, and optical pickup | Hiroyuki Ueda, Shinji Saito, Hiroyuki Sakakibara | 2001-04-10 |