Issued Patents All Time
Showing 1–21 of 21 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8013487 | Hydrodynamic bearing device, and spindle motor and information apparatus equipped with same | Koji Hirata, Keigo Kusaka, Yoshihito Watanabe, Hisaaki Yano | 2011-09-06 |
| 7940492 | Hydrodynamic bearing device, spindle motor, and recording and reproducing apparatus | Koji Hirata, Hiroaki Saito, Hiroyuki Kiriyama | 2011-05-10 |
| 7898129 | Spindle motor, and recording and reproducing apparatus equipped with the same | Yoichi Oki, Masahiro Jyono | 2011-03-01 |
| 7830637 | Hydrodynamic bearing device and disk rotation apparatus | Takafumi Asada, Hiroaki Saito, Keigo Kusaka, Hiroyuki Kiriyama, Daisuke Ito | 2010-11-09 |
| 7622837 | Hydrodynamic bearing device and spindle motor having the bearing device, and recording and/or reproducing apparatus using the spindle motor | Hiroaki Saito, Takeyoshi Yamamoto | 2009-11-24 |
| 7589934 | Hydrodynamic bearing device and disk rotating apparatus | Takafumi Asada, Hiroaki Saito, Keigo Kusaka, Hiroyuki Kiriyama, Daisuke Ito | 2009-09-15 |
| 7535134 | Spindle motor, and recording and reproducing apparatus equipped with the same | Yoichi Oki, Masahiro Jyono | 2009-05-19 |
| 7492548 | Hydrodynamic bearing device and disk rotating apparatus | Takafumi Asada, Hiroaki Saito, Keigo Kusaka, Hiroyuki Kiriyama, Daisuke Ito | 2009-02-17 |
| 7473034 | Hydrodynamic bearing device, motor, and disk driving apparatus | Hiroaki Saito, Hiroyuki Kiriyama, Koji Hirata | 2009-01-06 |
| 7420309 | Spindle motor | Akihiko Wakitani, Masahiro Jyono, Yoshihiro Ashizaki | 2008-09-02 |
| 7321178 | Spindle motor | Akihiko Wakitani, Masahiro Jyono, Yoshihiro Ashizaki | 2008-01-22 |
| 6787954 | Spindle motor | Shoichi Yoshikawa | 2004-09-07 |
| 6717310 | Spindle motor and method for assembling the same | Shoichi Yoshikawa, Norimasa Takata | 2004-04-06 |
| 6467963 | Fluid bearing equipment | Katsunori Sakuragi, Yasuo Saeki, Hideshi Fukutani | 2002-10-22 |
| 6364532 | Hydrodynamic bearing and motor having the same | Shoichi Yoshikawa | 2002-04-02 |
| 6357916 | Hydrodynamic bearing device | Yasuo Saeki, Katsunori Sakuragi, Hideshi Fukutani | 2002-03-19 |
| 6196722 | Hydrodynamic bearing | Takafumi Asada, Hiroaki Saito, Yasuo Saeki, Katsunori Sakuragi | 2001-03-06 |
| 6188152 | Motor and hard disk drive having a reduced vibration motor | Akihiko Wakitani, Shoichi Yoshikawa, Akihide Matsuo, Hideshi Fukutani | 2001-02-13 |
| 5906440 | Dynamic pressure type fluid bearing device | Koichiro Ohata, Taehiro Matsumoto | 1999-05-25 |
| 5708520 | Rotating polygon mirror driving apparatus | Koichiro Ohata, Tsuyoshi Kano | 1998-01-13 |
| 5555124 | Rotating polygon mirror driving apparatus | Koichiro Ohata, Tsuyoshi Kano | 1996-09-10 |