Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11869554 | Magnetic disk device and servo pattern write method | — | 2024-01-09 |
| 9286928 | Measuring method, manufacturing method for magnetic disk device, and magnetic disk device | — | 2016-03-15 |
| 8542458 | Magnetic disk drive and method for controlling microactuator in magnetic disk drive | Hideo Sado, Koichi Aikawa, Tetsuya Tabuchi | 2013-09-24 |
| 7855850 | Method and apparatus for head positioning using spiral servo patterns in a disk drive | Masahide Yatsu, Hideo Sado, Katsuki Ueda, Shouji Nakajima, Seiji Mizukoshi +1 more | 2010-12-21 |
| 7852593 | Method and apparatus for writing servo data, using spiral servo patterns in a disk drive | Seiji Mizukoshi, Hideo Sado, Shouji Nakajima, Katsuki Ueda | 2010-12-14 |
| 7804659 | Method and apparatus for positioning head using spiral servo pattern in a disk drive | Masahide Yatsu, Hideo Sado, Katsuki Ueda, Shouji Nakajima, Seiji Mizukoshi +1 more | 2010-09-28 |
| 7710682 | Method and apparatus for writing spiral servo pattern in a disk drive | Seiji Mizukoshi, Masahide Yatsu, Hideo Sado, Katsuki Ueda, Shinichirou Kouhara +1 more | 2010-05-04 |
| 7675705 | Method and apparatus for writing servo pattern using spiral pattern in disk drive | Seiji Mizukoshi, Masahide Yatsu, Hideo Sado, Katsuki Ueda, Shinichirou Kouhara +1 more | 2010-03-09 |
| 7639446 | Disk drive device and servo write method | Seiji Mizukoshi, Hideo Sado, Shouji Nakajima | 2009-12-29 |
| 7639445 | Disk drive device and head positioning control method | Hideo Sado, Seiji Mizukoshi, Shouji Nakajima, Katsuki Ueda, Shinichirou Kouhara | 2009-12-29 |
| 7630161 | Method and apparatus for writing spiral servo pattern in a disk drive | Shouji Nakajima, Masahide Yatsu, Hideo Sado, Katsuki Ueda, Seiji Mizukoshi +1 more | 2009-12-08 |
| 7477472 | Method and apparatus for writing servo data in a disk drive using spiral servo patterns | Hideo Sado, Masahide Yatsu, Katsuki Ueda, Seiji Mizukoshi, Shouji Nakajima +1 more | 2009-01-13 |