Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5508991 | Tracking error correction for optical head in different modes of operation | Hiroaki Tsuboi | 1996-04-16 |
| 4390977 | Apparatus for maintaining rotational speed in disk reproducing device | Tsutomu Fukui, Kazuo Yajika | 1983-06-28 |