Issued Patents 2004
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6836454 | Method and apparatus for reading and writing information onto and from information recording disks | Manabu Sasaki, Yasushi Fukuda, Masahiko Takahashi | 2004-12-28 |
| 6791934 | Objective lens optical system, optical head and optical information reproduction apparatus | Takeshi Shimano, Tetsuo Ariyoshi, Koichi Maruyama, Shuichi Takeuchi | 2004-09-14 |
| 6785203 | Optical lens for optical disc drive with aberration suppression for recording/reproducing for a plurality of optical disc types | Koichi Maruyama, Takeshi Shimano, Shigeru Nakamura, Akira Arimoto | 2004-08-31 |
| 6778486 | Laser module, optical head and optical information recording and reproducing apparatus | Kouji Arikawa, Susumu Tachibana, Hideo Taguchi, Shigeru Nakamura, Tetsuya Tomobe | 2004-08-17 |
| 6714506 | Method and apparatus for optical head and optical information reproducing | Kouji Arikawa, Shigeru Nakamura | 2004-03-30 |