Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7508610 | Method and apparatus for recording servo frame, storage disk, and method and apparatus for obtaining servo frame information | Tatsuhiko Kosugi | 2009-03-24 |
| 7365927 | Eccentricity correction data recording method and recording medium having eccentricity correction data | Kohei Takamatsu, Shuichi Hashimoto | 2008-04-29 |
| 7196865 | Recording apparatus having discoid record mediums | Kazunori Mori, Isamu Tomita, Tatsuhiko Kosugi | 2007-03-27 |
| 7164261 | Resonance-frequency measuring method determining a resonance frequency by counting the number of off-track occurrences | Shuichi Hashimoto, Ryuki Kubohara, Tatsuhiko Kosugi, Takeyori Hara | 2007-01-16 |
| 7136245 | Disk device | Kazunori Mori, Isamu Tomita, Takeyori Hara, Kouhei Takamatsu | 2006-11-14 |
| 7050250 | Storage apparatus and storage medium | Tatsuhiko Kosugi, Isamu Tomita, Kazunori Mori, Ryuki Kubohara | 2006-05-23 |
| 7002769 | Head control method and recording apparatus | Isamu Tomita, Shuichi Hashimoto | 2006-02-21 |
| 6774615 | Resonance-frequency measuring method determining a resonance frequency by counting the number of off-track occurrences | Susumu Yoshida, Shuichi Hashimoto, Ryuki Kubohara, Tatsuhiko Kosugi, Takeyori Hara | 2004-08-10 |
| 6535348 | Servo control method and information storage device | Tatsuhiko Kosugi | 2003-03-18 |