P

Inventor

MIYASHITA KUNIO

JP70 patents
⚠️ This page may combine multiple inventors who share the name “MIYASHITA KUNIO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

HITACHI LTD

43 patents
US5239490AAug 24, 1993

Device for detecting rotation of rotary shaft and rotation controlling apparatus using the same

HITACHI LTD126 citations98
US5243732ASep 14, 1993

Vacuum cleaner with fuzzy logic control

HITACHI LTD142 citations97
US5231344AJul 27, 1993

Control apparatus for electric generator

HITACHI LTD75 citations96
US4945268AJul 31, 1990

Permanent magnet type linear pulse motor

HITACHI LTD88 citations96
US4880474ANov 14, 1989

Method and apparatus for operating vacuum cleaner

HITACHI LTD125 citations96
US4874053AOct 17, 1989

Torque detecting apparatus

HITACHI LTD118 citations96
US4818939AApr 4, 1989

Apparatus for magnetically detecting position or speed or moving body utilizing bridge circuit with series connected MR elements

HITACHI LTD62 citations96
US4672253AJun 9, 1987

Permanent magnet electrical machine with reduced cogging

HITACHI LTD150 citations96
US4599561AJul 8, 1986

Device for detecting the relative and absolute position of a moving body

HITACHI LTD73 citations96
US4558265ADec 10, 1985

Method and apparatus for position control of an electric motor

HITACHI LTD93 citations96
US4511827AApr 16, 1985

Apparatus for driving a polyphase brushless motor with a suppressed torque ripple

HITACHI LTD60 citations96
US4473786ASep 25, 1984

Method for controlling angular position and apparatus therefor

HITACHI LTD59 citations96
US4403161ASep 6, 1983

Permanent magnet rotor

HITACHI LTD93 citations96
US4857786AAug 15, 1989

Structure of stepping motor and method of driving the stepping motor

HITACHI LTD79 citations95
US4144469AMar 13, 1979

Stress protection for permanent magnet type synchronous motor

HITACHI LTD56 citations95
US5038065AAug 6, 1991

Permanent magnet reversible synchronous motor

HITACHI LTD93 citations94
US4855652AAug 8, 1989

Speed control apparatus for a brushless direct current motor

HITACHI LTD93 citations93
US5294872AMar 15, 1994

Method and apparatus for operating vacuum cleaner

HITACHI LTD25 citations92
US5166585ANov 24, 1992

Motor control apparatus for an electric vacuum cleaner

HITACHI LTD28 citations92
US5023924AJun 11, 1991

Speed control apparatus for movable equipment

HITACHI LTD41 citations92
US5019776AMay 28, 1991

Magnetic position detection apparatus having two magnetic recording medium tracks with magnetoresistors arranged in a bridge circuit so as to eliminate even order harmonic distortion

HITACHI LTD54 citations92
US5019773AMay 28, 1991

Method and apparatus for detecting positions and/or speed of a moving body using two phase signals

HITACHI LTD33 citations92
US4983895AJan 8, 1991

Method and apparatus for operating vacuum cleaner

HITACHI LTD25 citations92
US4958406ASep 25, 1990

Method and apparatus for operating vacuum cleaner

HITACHI LTD41 citations92
US4904937AFeb 27, 1990

Apparatus for magnetically detecting positions with minimum length magnetic information units recorded on a plurality of magnetic tracks

HITACHI LTD24 citations92
US4786870ANov 22, 1988

Magnetic sensor for magnetically detecting the position of a movable body

HITACHI LTD25 citations92
US4678971AJul 7, 1987

Linear motor and control method thereof

HITACHI LTD38 citations92
US4594548AJun 10, 1986

Multi phase magnetic sensor apparatus for detecting the position of moving member

HITACHI LTD32 citations92
US4454438AJun 12, 1984

Synchronized induction motor

HITACHI LTD82 citations92
US4418372ANov 29, 1983

Magnetic rotary encoder

HITACHI LTD36 citations92
US4336475AJun 22, 1982

Slotless brushless motor

HITACHI LTD52 citations92
US5381584AJan 17, 1995

Vacuum cleaner

HITACHI LTD27 citations91
US4766376AAug 23, 1988

Magnetic position detector for detecting an absolute position of a movable member

HITACHI LTD26 citations91
US4677377AJun 30, 1987

Position-detecting sensor for detecting position of a moving object utilizing magnetism

HITACHI LTD33 citations91
US4628259ADec 9, 1986

Magneto resistive sensor for detecting movement of a rotating body

HITACHI LTD27 citations91
US4309635AJan 5, 1982

Squirrel-cage rotor having end rings of double structure

HITACHI LTD65 citations91
US4980617ADec 25, 1990

Speed control apparatus of movable equipment

HITACHI LTD34 citations90
US4918346AApr 17, 1990

Low ripple-torque permanent magnet brushless motor

HITACHI LTD23 citations90
US3968390AJul 6, 1976

Synchronous motor

HITACHI LTD33 citations88
US4250424AFeb 10, 1981

Rotor of synchronous machines

HITACHI LTD30 citations87
US4914361AApr 3, 1990

Method and apparatus for controlling the speed of moving body

HITACHI LTD19 citations82
US4713613ADec 15, 1987

Device for magnetically detecting displacement of non-magnetic movable member

HITACHI LTD20 citations82
US4580084AApr 1, 1986

Method and system for controlling speed of electric motor

HITACHI LTD25 citations81

HARMONIC DRIVE SYSTEMS

4 patents

TAKAHASHI TADASHI

1 patent

KYORIN SEIYAKU KK

1 patent

MIYASHITA KUNIO

1 patent

Showing the top 50 of 70 patents by PatentIndex Score.