Issued Patents 2004
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 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, Masayuki Inoue, Shinji Fujita | 2004-08-17 |