Issued Patents All Time
Showing 76–80 of 80 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4953124 | Opto-magnetic signal reproducing apparatus for reading, by differential detection using a magneto-optical effect, information magnetically recorded on a record medium | — | 1990-08-28 |
| 4907858 | Optical pickup apparatus | Hiroshi Hara, Hiraku Sonobe, Makoto Shihou, Masamichi Tateoka, Koichi Ida +1 more | 1990-03-13 |
| 4853917 | Optical tracking apparatus with photodetector disposed outside part of the effective diameter of the lens system | Kazuo Uzuki, Makoto Shiho, Shigeru Aoi | 1989-08-01 |
| 4813032 | Magneto-optical information reproducing apparatus in which the azimuth angle of the transmission axis of an analyzer is optimized so that the C/N ratio of a reproducing signal is maximum | — | 1989-03-14 |
| 4803579 | Magneto-optical information reproducing apparatus in which divided reproducing lights are differentially detected by a photodetector having no amplifying action through an analyzer whose transmission axis azimuth is optimized | — | 1989-02-07 |