Inventor
TAKEHARA ISAMU
JP21 patents
⚠️ This page may combine multiple inventors who share the name “TAKEHARA ISAMU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SEIKO INSTR INC
14 patentsUS6307291B1Oct 23, 2001
Hydraulic dynamic bearing and spindle motor and rotary assembly provided
SEIKO INSTR INC59 citations95
US6371650B1Apr 16, 2002
Hydraulic dynamic bearing and spindle motor and rotary assembly provided
SEIKO INSTR INC52 citations92
US6176618B1Jan 23, 2001
Dynamic pressure bearing, spindle motor using dynamic pressure bearing, and rotary device having the spindle motor as driving source
SEIKO INSTR INC38 citations92
US5270602ADec 14, 1993
Corless motor
SEIKO INSTR INC27 citations92
US6354742B1Mar 12, 2002
Hydraulic dynamic bearing and spindle motor
SEIKO INSTR INC15 citations83
US6247848B1Jun 19, 2001
Hydraulic dynamic bearing and spindle motor utilizing hydraulic dynamic bearing
SEIKO INSTR INC15 citations83
US6040648AMar 21, 2000
Spindle motor and rotator device
SEIKO INSTR INC19 citations83
US5394045AFeb 28, 1995
Brushless motor
SEIKO INSTR INC9 citations74
US5374867ADec 20, 1994
Coreless motor
SEIKO INSTR INC10 citations74
US6371649B1Apr 16, 2002
Method for lubricating a fluid dynamic pressure bearing
SEIKO INSTR INC10 citations72
US7307364B2Dec 11, 2007
Motor and recording medium drive device
SEIKO INSTR INC2 citations63
US7921547B2Apr 12, 2011
Method of magnetizing permanent magnet for a motor
SEIKO INSTR INC2 citations62
US5391954AFeb 21, 1995
Direct current motor
SEIKO INSTR INC6 citations54
US7796357B2Sep 14, 2010
Information recording and playback apparatus and method of manufacturing the same
SEIKO INSTR INC1 citations51
SEIKO SEIKI KK
5 patentsUS5804896ASep 8, 1998
High speed spindle motor and apparatus equipped with high speed spindle motor
SEIKO SEIKI KK54 citations96
US6163952ADec 26, 2000
Method of manufacturing armature of motor using hoop member
SEIKO SEIKI KK27 citations92
US5821647AOct 13, 1998
Spindle motor
SEIKO SEIKI KK28 citations92
US6598288B1Jul 29, 2003
Armature of motor, manufacturing method of the same and motor using the same and motor having the same
SEIKO SEIKI KK6 citations74
US6036368AMar 14, 2000
Dynamic pressure bearing device
SEIKO SEIKI KK8 citations73