Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7586816 | Playback apparatus and layer jump method | — | 2009-09-08 |
| 6716508 | Optical recording medium | Masayoshi Nagata | 2004-04-06 |
| 6487144 | DISK RECORDING MEDIUM INCLUDING DATA PRE-FORMATTED-DATA-RECORDED HEADER HAVING FIRST AND SECOND IDENTICAL ADDRESS NUMBERS RADIALLY DISPLACED FROM EACH OTHER ON OPPOSITE SIDES OF GROOVE OR LAND TRACK CENTER LINE, AND DISK DRIVE UNIT FOR USE WITH THE RECORDING MEDIUM | Masayoshi Nagata, Junichi Horigome | 2002-11-26 |
| 5822281 | Disk apparatus and disk access method employing counterelectromotive voltage from second voice coil motor to control first voice coil motor | — | 1998-10-13 |