Issued Patents 2003
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6667947 | Optical multi-layer information recordating medium | Ikuya Kikuchi, Makoto Sato, Katsuhiro Koike, Yoshitsugu Araki | 2003-12-23 |
| 6628599 | Variable optical element, a pickup apparatus having the variable optical element, and an information recording and reproducing apparatus having the pickup apparatus | Hiroyuki Ota | 2003-09-30 |
| 6618346 | Optical pickup device having aperture restriction arrangement | Takayuki Nomoto | 2003-09-09 |
| 6597442 | Apparatus for measuring aberration of a lens and an apparatus for adjusting a position of the lens | Toshiharu Ezuka | 2003-07-22 |
| 6594091 | Optical pickup | Ikuya Kikuchi, Katsuhiro Koike, Makoto Sato | 2003-07-15 |
| 6584065 | Information recording medium apparatus for forming the same and information recording and reproducing systems | Ikuya Kikuchi | 2003-06-24 |
| 6542454 | Pickup device | — | 2003-04-01 |
| 6529339 | Lens and production method therefor | Katsuhiro Koike, Ikuya Kikuchi, Makoto Sato | 2003-03-04 |