Issued Patents All Time
Showing 1–25 of 36 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7864484 | Hard-disk drive | Hiroshi Uchida | 2011-01-04 |
| 7859787 | Disk drive and controlling method thereof | — | 2010-12-28 |
| 7724464 | Recording disk and disk drive | Fuminori Sai, Naoyuki Minami, Sadamichi Sone | 2010-05-25 |
| 7702012 | Infinite impulse response filter circuit and magnetic disk drive | — | 2010-04-20 |
| 7626780 | Magnetic disk drive | — | 2009-12-01 |
| 7573667 | Servo information write method and apparatus | — | 2009-08-11 |
| 7561369 | Drive unit | Kazuaki Usui, Hidefumi Tominaga, Koumei Hanaoka, Masaki Nagashima | 2009-07-14 |
| 7538964 | Magnetic disk drive | — | 2009-05-26 |
| 7474485 | Magnetic disk medium, magnetic disk drive, and method for detecting rotational position of magnetic disk medium | Masahiro Shohda | 2009-01-06 |
| 7408732 | Shock resistant, high reliability rotating magnetic storage device and method | Yutaka Ozawa, Kenji Toga | 2008-08-05 |
| 7317591 | Servo control for magnetic disk drive | — | 2008-01-08 |
| 7315430 | Servo controller in magnetic disk drive | — | 2008-01-01 |
| 7203022 | Disk device, and positioning control method and signal-processing circuit for head | — | 2007-04-10 |
| 7164550 | Disk drive, positioning method for head, and servo system | — | 2007-01-16 |
| 7136258 | Rotational recording apparatus and control method | — | 2006-11-14 |
| 7031096 | Center frequency adjustment for a notch filter | — | 2006-04-18 |
| 7006321 | Data storage apparatus, rotation control apparatus, and rotation control method | — | 2006-02-28 |
| 7002766 | Shock resistant, high reliability rotating magnetic storage device | Yutaka Ozawa, Kenji Toga | 2006-02-21 |
| 6958882 | Shock control for rotational recording apparatus | — | 2005-10-25 |
| 6754021 | Shock resistant, high reliability rotating magnetic storage device | Yutaka Ozawa, Kenji Toga | 2004-06-22 |
| 6754031 | Method and apparatus for controlling an access mechanism within a disk drive | — | 2004-06-22 |
| 6747832 | Disk apparatus and head position control method | Yutaka Ozawa, Kenji Toga | 2004-06-08 |
| 6490691 | Error recovery in a disk drive | Junichi Kimura, Satoshi Hashimoto | 2002-12-03 |
| 6470412 | Disk drive, disk control method, data read/write method, data assignment method, and disk storage medium | Yutaka Ozawa, Kazunari Tsuchimoto | 2002-10-22 |
| 6075667 | Method and apparatus for determining head positioning in a magnetic disk drive system using first and second gray codes | Yoshiro Amano | 2000-06-13 |