Issued Patents 2004
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6807133 | Optical head and optical disk apparatus | Tetsuo Ariyoshi, Mariko Umeda | 2004-10-19 |
| 6791934 | Objective lens optical system, optical head and optical information reproduction apparatus | Tetsuo Ariyoshi, Kazuo Shigematsu, 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, Shigeru Nakamura, Akira Arimoto, Kazuo Shigematsu | 2004-08-31 |
| 6782018 | Diode laser module and application equipment | Kimio Tatsuno, Masahide Tokuda, Shigeharu Kimura, Hirohisa Sano | 2004-08-24 |
| 6768556 | Near-field optical probe, near-field optical microscope and optical recording/reproducing device with near-field optical probe | Takuya Matsumoto, Sumio Hosaka, Fumio Isshiki | 2004-07-27 |
| 6728173 | Information reproducing method which reproduces plural components of a focus error signal and a tracking error signal from plural detection regions of plural reflected light beams | Shigeru Nakamura, Kunikazu Ohnishi, Masayuki Inoue, Yukio Fukui | 2004-04-27 |
| 6721242 | Optical detector having three light receiving areas | Kunikazu Ohnishi, Shigeru Nakamura, Masayuki Inoue, Yukio Fukui, Yasuyuki Sugi +2 more | 2004-04-13 |
| 6717906 | Optical disk apparatus to perform either reproduction or reproduction/recording of each of at least two kinds of optical disks having different substrate thicknesses | — | 2004-04-06 |