Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7417939 | Optical pickup including aberration correction lens assembly | Makoto Sato | 2008-08-26 |
| 7054252 | Optical pickup with an aberration correction lens assembly | Makoto Sato | 2006-05-30 |
| 6801491 | Focus error detecting apparatus of optical pickup with a light separating and astigmatism generation optical element and detection method thereof | Masakazu Ogasawara, Takuma Yanagisawa | 2004-10-05 |
| 6449095 | Optical pickup | Noriaki Murao | 2002-09-10 |
| 6373807 | Optical pickup information reproducing apparatus and information recording apparatus | Ikuya Kikuchi | 2002-04-16 |
| 6218655 | Optical pickup | Masakazu Ogasawara, Kiyoshi Tateishi | 2001-04-17 |
| 5859818 | Tilt servo apparatus for use in optical disc reproducing apparatus | Kiyoshi Tateishi, Noriaki Murao | 1999-01-12 |