Inventor
ICHIYAMA YOSHIKAZU
JP30 patents
⚠️ This page may combine multiple inventors who share the name “ICHIYAMA YOSHIKAZU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
NIDEC CORP
19 patentsUS6246136B1Jun 12, 2001
Motor and method for manufacturing the same
NIDEC CORP92 citations98
US6211592B1Apr 3, 2001
Motor for driving storage disks
NIDEC CORP85 citations98
US6066903AMay 23, 2000
Hydrodynamic bearing for use in an electric motor and an electric motor having the hydrodynamic bearing
NIDEC CORP105 citations98
US6456458B1Sep 24, 2002
Disk-drive motor rotating on a magnetically counterbalanced single hydrodynamic thrust bearing
NIDEC CORP74 citations96
US6404087B1Jun 11, 2002
Motor including hydrodynamic bearings with pair of thrust plates
NIDEC CORP61 citations96
US6361214B1Mar 26, 2002
Hydrodynamic-pressure bearing device and motor provided with the hydrodynamic-pressure bearing device
NIDEC CORP76 citations96
US6339270B1Jan 15, 2002
Motor for driving storage disks, and storage disk drive device provided therewith
NIDEC CORP73 citations96
US6307293B1Oct 23, 2001
Motor having a hydrodynamic pressure bearing
NIDEC CORP65 citations96
US6126320AOct 3, 2000
Hydrodynamic pressure bearing
NIDEC CORP59 citations96
US6059459AMay 9, 2000
Hydrodynamic pressure bearing
NIDEC CORP49 citations96
US6034454AMar 7, 2000
Motor
NIDEC CORP59 citations96
US5707154AJan 13, 1998
Hydrodynamic fluid pressure bearings
NIDEC CORP71 citations96
US5658080AAug 19, 1997
Motor with a hydro-dynamic bearing
NIDEC CORP70 citations96
US6493181B1Dec 10, 2002
Thrust hydrodynamic bearing, spindle motor provided therewith, and disk drive utilizing the motor
NIDEC CORP44 citations92
US6250808B1Jun 26, 2001
Motor having a plurality of dynamic pressure bearings
NIDEC CORP39 citations92
US5791784AAug 11, 1998
Fluid dynamic pressure bearing and motor and magnetic disk apparatus using fluid dynamic pressure bearing
NIDEC CORP25 citations92
US6549366B1Apr 15, 2003
Rotation-stabilizing ambient gaseous fluid guide for rotary and storage devices
NIDEC CORP11 citations74
US6036369AMar 14, 2000
Fluid dynamic pressure bearing and motor and magnetic disk apparatus using fluid dynamic pressure bearing
NIDEC CORP14 citations74
US5879084AMar 9, 1999
Hydrodynamic bearing
NIDEC CORP8 citations74
KURA LAB CORP
7 patentsUS7567006B2Jul 28, 2009
Field controllable rotating electric machine system with flux shunt control
KURA LAB CORP31 citations92
US6686674B2Feb 3, 2004
Motor having single cone fluid dynamic bearing balanced with magnetic attraction
KURA LAB CORP34 citations92
US6664687B2Dec 16, 2003
Motor having single cone fluid dynamic bearing balanced with shaft end magnetic attraction
KURA LAB CORP38 citations92
US6664686B2Dec 16, 2003
Motor having single cone air dynamic bearing balanced with shaft end magnetic attraction
KURA LAB CORP24 citations92
US8373325B2Feb 12, 2013
Rotating electric machine system
KURA LAB CORP10 citations84
US7999432B2Aug 16, 2011
Field controllable rotating electric machine system with magnetic excitation part
KURA LAB CORP11 citations84
US6657343B2Dec 2, 2003
Magnetic fluid bearing motor employing porous sleeve
KURA LAB CORP8 citations73
ICHIYAMA YOSHIKAZU
2 patentsNEC CORP
2 patentsUS5287335AFeb 15, 1994
Optical disk device for record and reproduction of additional information besides reproduction of basic one
NEC CORP7 citations74
US5166913ANov 24, 1992
Optical disk device for record and reproduction of additional information besides reproducing of basic information
NEC CORP10 citations74