SO

Shigeo Obata

Sumitomo Electric Industries: 14 patents #1,767 of 21,551Top 9%
PA Panasonic: 4 patents #6,180 of 21,108Top 30%
Overall (All Time): #258,762 of 4,157,543Top 7%
18
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
8033732 Hydrodynamic bearing device, and spindle motor equipped with same Takafumi Asada, Hiroaki Saito, Daisuke Ito 2011-10-11
7911734 Spindle motor with a magnetic shield plate having an inclined annular face Akihiko Wakitani 2011-03-22
7787214 Disk device Kenichi Miyamori, Hiromitsu Noda, Yoshiro Ueno 2010-08-31
7663280 Spindle motor and disk drive device using the same Kenichi Miyamori, Hiromitsu Noda, Hiromi Kita 2010-02-16
7448805 Thrust dynamic pressure bearing, spindle motor using thereof, and information recording/reproducing device using the spindle motor Hiromi Kita, Kenichi Miyamori, Hiromitsu Noda 2008-11-11
7435001 Hydrodynamic bearing device, method for manufacturing the same, spindle motor and recording and reproduction apparatus Naoshi Kainoh, Akihito Shirai, Youichi Nishimoto, Junichi Nakamura, Tomohiro Haga 2008-10-14
7382076 Spindle motor Kenichi Miyamori, Hiromitsu Noda 2008-06-03
7317271 Fluid bearing motor, and disk drive mounted with same Kaoru Matsuoka, Hideki Kuwajima, Kenichi Miyamori, Hiromitsu Noda 2008-01-08
7265939 Spindle motor and disk drive unit Hideki Kuwajima, Kaoru Matsuoka, Kenichi Miyamori 2007-09-04
7249363 Spindle motor, information recording and reproducing apparatus having a spindle motor, and manufacturing method of spindle motor Hiromitsu Noda 2007-07-24
7160031 Thrust dynamic pressure bearing, spindle motor using the same, and information recording and reproducing apparatus using them Hiromi Kita, Kenichi Miyamori, Hiromitsu Noda 2007-01-09
7110221 Disk drive Hideki Kuwajima, Hiromi Kita 2006-09-19
7084536 Fluid bearing motor, and disk drive mounted with same Kaoru Matsuoka, Hideki Kuwajima, Kenichi Miyamori, Hiromitsu Noda 2006-08-01
6965492 Rotor assembly, information-recording/-reproducing device using the rotor assembly and method of assembling the rotor assembly Kaoru Matsuoka, Koichi Shinohara, Yoshihiro Ueno, Tatsuhiko Inagaki, Hideki Kuwajima +1 more 2005-11-15
6915557 Method of assembling rotor structure 2005-07-12
6826018 Disk drive with head supporting device Hideki Kuwajima, Koichi Shinohara, Kaoru Matsuoka, Kenichi Sakamoto, Makoto Miyamoto 2004-11-30
6411465 Rotary head drum assembly with upper, lower and inner drums with cylindrical surfaces of differing outward radial position Makoto Miyamoto, Atsushi Imai, Yoshinobu Ono, Shinji Tanaka, Hisashi Takahashi +1 more 2002-06-25
6217218 Hydrodynamic bearing spindle motor Hiroshi Inoue, Masashi Omura, Hiromichi Inomata, Kaoru Matsuoka 2001-04-17