Issued Patents 1989
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4881216 | Optical head in an optical memory device | Yoshikazu Fujii, Tetsuya Inui, Kenji Ohta, Schohichi Katoh | 1989-11-14 |
| 4868922 | Data modulation/demodulation system utilizing demodulation clocks that differ in phase | Kentaro Tsuji, Tsuneo Fujiwara, Shigemi Maeda, Taeshi Yamaguchi, Shozou Kobayashi | 1989-09-19 |
| 4864125 | Extra magnetic field positioning apparatus | Hisashi Minami, Masaru Nomura, Takao Hyuga | 1989-09-05 |
| 4862443 | Sync signal detection apparatus for accurately synchronizing reproduced data | Kentaroh Tsuji, Shigemi Maeda, Takeshi Yamaguchi, Noriaki Sakamoto, Shigeo Terashima | 1989-08-29 |
| 4849953 | Tracking circuit for an optical information recording and reproducing apparatus | Masaru Nomura, Shigeo Terashima | 1989-07-18 |
| 4843604 | Beam controller for magneto-optical disc memory system | Tetsuo Fujiwara, Hiroshi Fuji, Takashi Iwaki, Shozou Kobayashi | 1989-06-27 |