Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6956192 | Optical head and optical disk drive | — | 2005-10-18 |
| 5719835 | Light detecting device for receiving light from corresponding portions of a recording medium | — | 1998-02-17 |
| 5559783 | An optical head having a rotating mirror | — | 1996-09-24 |
| 5357102 | Tilted light detection device for preventing undesirable retro-reflection | — | 1994-10-18 |
| 5345432 | Optical head | Akihiro Kasahara, Hideo Yamasaki, Takashi Yoshizawa | 1994-09-06 |
| 5218524 | Optical disk apparatus | Akihiro Kasahara, Hideo Yamasaki, Takashi Yoshizawa | 1993-06-08 |
| 5153864 | Focusing detection optical path for an optical information processing system | — | 1992-10-06 |
| 5132959 | Optical head in use with an optical recording/reproducing apparatus | — | 1992-07-21 |
| 5105407 | Optical information-processing apparatus | — | 1992-04-14 |
| 5105411 | Apparatus for detecting and correcting focusing and tracking errors | — | 1992-04-14 |