Issued Patents 2004
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6827258 | Electronic purse | Yutaka Takami, Kenji Matsumoto, Shigeyuki Itoh | 2004-12-07 |
| 6798564 | Raman amplification method, raman amplifier, and optical transmission system | Masayuki Nishimura | 2004-09-28 |
| 6778475 | Optical detector, optical pickup and optical information reproducing apparatus using optical pickup for detecting at least three light beams separated from one or more light sources | Katsuhiko Izumi, Kunikazu Ohnishi, Kenichi Shimada, Shinji Fujita | 2004-08-17 |
| 6746331 | Assisting a player to contact an object by adjusting timing | Mitsuharu Saikawa | 2004-06-08 |
| 6732272 | Program writable integrated circuit card and method therefore | Shigeyuki Itoh, Yutaka Takami, Kenji Matsumoto | 2004-05-04 |
| 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, Shigeru Nakamura, Kunikazu Ohnishi, Yukio Fukui | 2004-04-27 |
| 6721242 | Optical detector having three light receiving areas | Kunikazu Ohnishi, Takeshi Shimano, Shigeru Nakamura, Yukio Fukui, Yasuyuki Sugi +2 more | 2004-04-13 |