Issued Patents All Time
Showing 1–25 of 39 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10636446 | Magnetic disk device and head positioning method | Hiroyuki Suzuki | 2020-04-28 |
| 10115422 | Hard disk drive, manufacturing method of the same, and servo data writing method | Shinsuke Akiya, Kazuhiko Takaishi | 2018-10-30 |
| 9905257 | Hard disk drive, manufacturing method of the same, and servo data writing method | Shinsuke Akiya, Kazuhiko Takaishi | 2018-02-27 |
| 8542458 | Magnetic disk drive and method for controlling microactuator in magnetic disk drive | Toshitaka Matsunaga, Koichi Aikawa, Tetsuya Tabuchi | 2013-09-24 |
| 8400727 | Recording device and method for positioning electromagnetic transducer | Yutaka Yoshida | 2013-03-19 |
| 8363347 | Storage device and information correction method | Yoshinari Higashino | 2013-01-29 |
| 7961578 | Method and apparatus for generating synchronous clock for write operation in a disk drive | — | 2011-06-14 |
| 7933088 | Disk drive having a disk of discrete-track media type | Masatoshi Sakurai, Yuji Sakai | 2011-04-26 |
| 7920353 | Disk drive configured to calculate head rebound distance | Katsuki Ueda, Takahisa Hagiwara | 2011-04-05 |
| 7855850 | Method and apparatus for head positioning using spiral servo patterns in a disk drive | Toshitaka Matsunaga, Masahide Yatsu, 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, Toshitaka Matsunaga, Shouji Nakajima, Katsuki Ueda | 2010-12-14 |
| 7804659 | Method and apparatus for positioning head using spiral servo pattern in a disk drive | Toshitaka Matsunaga, Masahide Yatsu, 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, Katsuki Ueda, Toshitaka Matsunaga, 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, Katsuki Ueda, Toshitaka Matsunaga, Shinichirou Kouhara +1 more | 2010-03-09 |
| 7639446 | Disk drive device and servo write method | Seiji Mizukoshi, Toshitaka Matsunaga, Shouji Nakajima | 2009-12-29 |
| 7639445 | Disk drive device and head positioning control method | Toshitaka Matsunaga, 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, Katsuki Ueda, Toshitaka Matsunaga, Seiji Mizukoshi +1 more | 2009-12-08 |
| 7548394 | Magnetic recording medium and magnetic recording/reproducing apparatus | Makoto Asakura | 2009-06-16 |
| 7538968 | Magnetic recording medium and magnetic recording/reproducing apparatus | Makoto Asakura | 2009-05-26 |
| 7538965 | Method and apparatus for writing servo management information in a disk drive | Katsuki Ueda, Yuichi Notake, Masahide Yatsu, Seiji Mizukoshi, Takuji Shimada +1 more | 2009-05-26 |
| 7532430 | Magnetic recording medium and magnetic recording/reproducing apparatus | Makoto Asakura | 2009-05-12 |
| 7525755 | Magnetic recording medium and magnetic recording/reproducing apparatus | Makoto Asakura | 2009-04-28 |
| 7477472 | Method and apparatus for writing servo data in a disk drive using spiral servo patterns | Masahide Yatsu, Katsuki Ueda, Toshitaka Matsunaga, Seiji Mizukoshi, Shouji Nakajima +1 more | 2009-01-13 |
| 7457074 | Method and apparatus for correcting errors while writing spiral servo information in a disk drive | Masahide Yatsu, Yuichi Notake, Seiji Mizukoshi, Takayuki Matsuzaki, Takuji Shimada | 2008-11-25 |
| 7423835 | Method and apparatus for servo control using spiral servo information in a disk drive | Masahide Yatsu, Masafumi Iwashiro, Shouji Nakajima, Seiji Mizukoshi, Shinichiro Kouhara | 2008-09-09 |