Issued Patents 2004
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6822800 | Objective lens for optical pickup | Daisuke Koreeda | 2004-11-23 |
| 6819504 | High NA objective lens for optical pick-up | — | 2004-11-16 |
| 6807019 | Objective lens having diffractive structure for optical pick-up | Shuichi Takeuchi | 2004-10-19 |
| 6807018 | Objective lens for optical pick-up | Takashi Yamanouchi | 2004-10-19 |
| 6791934 | Objective lens optical system, optical head and optical information reproduction apparatus | Takeshi Shimano, Tetsuo Ariyoshi, Kazuo Shigematsu, Shuichi Takeuchi | 2004-09-14 |
| 6791932 | Optical system of optical pick-up | — | 2004-09-14 |
| 6785215 | Astigmatic objective lens for optical head | Takashi Yamanouchi | 2004-08-31 |
| 6785203 | Optical lens for optical disc drive with aberration suppression for recording/reproducing for a plurality of optical disc types | Takeshi Shimano, Shigeru Nakamura, Akira Arimoto, Kazuo Shigematsu | 2004-08-31 |
| 6781764 | Objective lens for optical pick-up | Shuichi Takeuchi | 2004-08-24 |
| 6775064 | Objective lens for optical pick-up | — | 2004-08-10 |
| 6760295 | Optical pick-up | — | 2004-07-06 |
| 6741402 | Objective lens for optical head | Shuichi Takeuchi | 2004-05-25 |
| 6741539 | Optical system for optical head | — | 2004-05-25 |