Inventor
OHIWA SHOJI
JP17 patents
⚠️ This page may combine multiple inventors who share the name “OHIWA SHOJI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
JAPAN SERVO
11 patentsUS6762526B2Jul 13, 2004
Multi-phase flat-type PM stepping motor and driving circuit thereof
JAPAN SERVO35 citations92
US6703803B2Mar 9, 2004
Fan motor driving circuit
JAPAN SERVO55 citations91
US6552453B2Apr 22, 2003
Magnetic pole position detector for an electric motor
JAPAN SERVO51 citations89
US7626301B2Dec 1, 2009
Electric rotating machine having permanent magnets and method of manufacturing teeth portions of the stator iron core
JAPAN SERVO12 citations82
US6710504B2Mar 23, 2004
Brushless DC motor
JAPAN SERVO16 citations81
US7068001B2Jun 27, 2006
Motor control system
JAPAN SERVO7 citations73
US7446441B2Nov 4, 2008
Outer rotor type hybrid stepping motor
JAPAN SERVO3 citations62
US7385321B2Jun 10, 2008
Motor having shifted teeth of pressed powder construction
JAPAN SERVO3 citations62
US7339292B2Mar 4, 2008
Motor having shifted teeth of pressed powder construction
JAPAN SERVO2 citations62
US6954014B2Oct 11, 2005
Motor with frequency generator and office automation equipment using same
JAPAN SERVO6 citations56
US7250698B2Jul 31, 2007
Multi-phase claw-pole type rotary machine
JAPAN SERVO0 citations41
HITACHI IND EQUIPMENT SYS
6 patentsUS7649298B2Jan 19, 2010
Claw teeth type electric rotary machine and manufacturing method for stators
HITACHI IND EQUIPMENT SYS21 citations92
US7714466B2May 11, 2010
Claw-teeth-type rotating electrical machine
HITACHI IND EQUIPMENT SYS8 citations84
US7791244B2Sep 7, 2010
Multiphase claw-pole type electric rotary machine, cogging torque adjustment system of the same, generator system, and motor system
HITACHI IND EQUIPMENT SYS7 citations74
US7592734B2Sep 22, 2009
Three-phase permanent magnet brushless motor
HITACHI IND EQUIPMENT SYS7 citations72
USD572660SJul 8, 2008
Claw teeth motor core
HITACHI IND EQUIPMENT SYS5 citations63
US7605517B2Oct 20, 2009
Claw pole rotating electric machine
HITACHI IND EQUIPMENT SYS4 citations62