Issued Patents All Time
Showing 26–42 of 42 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6661765 | Optical pickup apparatus | Nobuyoshi Iwasaki, Daisuke Matsuo, Shohei Kobayashi | 2003-12-09 |
| 6496454 | Optical information recording/reproducing apparatus | — | 2002-12-17 |
| 6438090 | Optical pickup device | — | 2002-08-20 |
| 6396785 | Optical disk apparatus | Shohei Kobayashi | 2002-05-28 |
| 6135161 | Method of making a fabric and a fabric obtained therefrom | Tomomichi Fujiyama, Masao Seki, Kiyokazu Minami | 2000-10-24 |
| 5970033 | Tracking control unit for optical disk drive capable of suppressing control residual derived from disturbance | Takeru Hokkezu | 1999-10-19 |
| 5875166 | Optical pick-up apparatus having low coefficient of friction between slide bearing and guiding member | Tetsuo Ikegame, Hiroshi Ezawa | 1999-02-23 |
| 5745468 | Mark edge recorded signal reproducing device for use in optical disk apparatus | — | 1998-04-28 |
| 5742568 | Tracking controller and seek controller for optical recording device | Kenichi Ito | 1998-04-21 |
| 5699332 | Control circuit of optical disk system to improve transition for seek control to tracking control | — | 1997-12-16 |
| 5689358 | Optical functional devices and integrated optical devices having a ridged multi-quantum well structure | Masashi Nakao, Yasuhiro Suzuki, Osamu Mitomi, Kazuo Kasaya, Kiyoyuki Yokoyama | 1997-11-18 |
| 5684767 | Track jump control circuit of optical disk apparatus properly controlling timing of accelerating pulses and decelerating pulses, and performing stable track jump | — | 1997-11-04 |
| 5598389 | Signal detector for an optical information reproducing apparatus | Hiroshi Ezawa, Nobuhide Matsubayashi | 1997-01-28 |
| 5585957 | Method for producing various semiconductor optical devices of differing optical characteristics | Masashi Nakao, Yasuhiro Kondou, Masanobu Okayasu, Mitsuru Naganuma, Yasuhiro Suzuki +4 more | 1996-12-17 |
| 5570335 | Reproducing waveform correction circuit for optical information recording/reproducing system | Takashi Ogata | 1996-10-29 |
| 5566142 | Apparatus using an optical pickup | Nobuo Miyairi, Shohei Kobayashi, Akihiko Yoshizawa | 1996-10-15 |
| 5195069 | Track jump controlling apparatus which can output decelerating pulses by switching a servo on after a fixed time | — | 1993-03-16 |