Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6584057 | Optical pickup system | Yoshitsugu Araki | 2003-06-24 |
| 6449095 | Optical pickup | Sakashi Ohtaki | 2002-09-10 |
| 6388967 | Liquid crystal driving signal generating apparatus and optical disk reproducing apparatus with liquid crystal driving signal generating apparatus | Junichi Furukawa, Kiyoshi Tateishi, Hiroaki Abe | 2002-05-14 |
| 6137754 | Search method for information record medium | Junichi Furukawa, Kiyoshi Tateishi | 2000-10-24 |
| 6078556 | System for producing a liquid crystal driving signal | Junichi Furukawa, Kiyoshi Tateishi | 2000-06-20 |
| 5886496 | Tilt servo controlling apparatus | Junichi Furukawa, Kiyoshi Tateishi | 1999-03-23 |
| 5859818 | Tilt servo apparatus for use in optical disc reproducing apparatus | Kiyoshi Tateishi, Sakashi Ohtaki | 1999-01-12 |
| 5687146 | Focus control device for use with an optical pickup comprising a refracting means | Takanori Maeda | 1997-11-11 |
| 5420847 | Reproducing system for an optical disc | Takanori Maeda, Toru Akiyama, Fumitaka Kotaka | 1995-05-30 |
| 5379288 | Optical information recording medium and a reproducing apparatus for the recording medium | Takanori Maeda | 1995-01-03 |
| 5302834 | Optical pickup and tilt control device including a plurality of photosensitive units for generating signals indicating whether tilt correction is necessary | — | 1994-04-12 |
| 5303221 | Optical pickup for an optical disc reproducing system | Takanori Maeda | 1994-04-12 |