Issued Patents 2004
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6785203 | Optical lens for optical disc drive with aberration suppression for recording/reproducing for a plurality of optical disc types | Koichi Maruyama, Takeshi Shimano, Akira Arimoto, Kazuo Shigematsu | 2004-08-31 |
| 6778486 | Laser module, optical head and optical information recording and reproducing apparatus | Kouji Arikawa, Susumu Tachibana, Kazuo Shigematsu, Hideo Taguchi, Tetsuya Tomobe | 2004-08-17 |
| 6773759 | Method for forming multi-layer coating film | Yoshiko Kobayashi, Susumu Umemura, Kenta Shimizu, Yasushi Nakao | 2004-08-10 |
| 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 | Takeshi Shimano, Kunikazu Ohnishi, Masayuki Inoue, Yukio Fukui | 2004-04-27 |
| 6722028 | Method of making electronic device | — | 2004-04-20 |
| 6721242 | Optical detector having three light receiving areas | Kunikazu Ohnishi, Takeshi Shimano, Masayuki Inoue, Yukio Fukui, Yasuyuki Sugi +2 more | 2004-04-13 |
| 6717898 | Optical information reproducing method for reproducing information by generating a signal representing a center of a mark | Takeshi Maeda, Koichiro Wakabayashi | 2004-04-06 |
| 6714506 | Method and apparatus for optical head and optical information reproducing | Kouji Arikawa, Kazuo Shigematsu | 2004-03-30 |
| 6679118 | Accelerometer and spherical sensor type measuring instrument | Masayoshi Esashi, Takao Murakoshi, Nobuo Takeda | 2004-01-20 |
| 6680888 | Information recording/reproducing apparatus and method and information recording medium | Tsuyoshi Toda, Takeshi Maeda | 2004-01-20 |