Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6388976 | Compact optical head including two light emitters having parallel optical axes | Shinji Fujita, Hidenori Shinohara, Toshio Sugiyama, Yukio Fukui | 2002-05-14 |
| 6069862 | Compact optical head including two light emitters having parallel optical axes | Shinji Fujita, Hidenori Shinohara, Toshio Sugiyama, Yukio Fukui | 2000-05-30 |
| 5872761 | Optical disk apparatus and optical head thereof | Yasuyuki Sugi, Toshio Sugiyama, Hidenori Shinohara, Yukio Fukui | 1999-02-16 |
| 5699341 | Optical disk apparatus and optical head thereof | Yasuyuki Sugi, Toshio Sugiyama, Hidenori Shinohara, Yukio Fukui | 1997-12-16 |
| 5404344 | Recording/reproducing optical head producing focusing error signal from zero-th order diffracted light and tracking error signal from first order diffracted light | Kunikazu Ohnishi, Tohru Sasaki, Masayuki Inoue, Akira Arimoto, Shigeru Nakamura +1 more | 1995-04-04 |