Inventor
NAKATA KIYOSHI
JP39 patents
⚠️ This page may combine multiple inventors who share the name “NAKATA KIYOSHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
27 patentsUS6304472B1Oct 16, 2001
Electric power converting system with integrator providing output indicative of current
HITACHI LTD84 citations98
US5361196ANov 1, 1994
Power converter for converting DC voltage into AC phase voltage having three levels of positive, zero and negative voltage
HITACHI LTD118 citations98
US6437997B1Aug 20, 2002
Control device for electric power translating device
HITACHI LTD54 citations96
US6307759B1Oct 23, 2001
Control device for electric power translating device
HITACHI LTD49 citations96
US6166514ADec 26, 2000
Apparatus and method for controlling induction motor
HITACHI LTD69 citations96
US5801936ASep 1, 1998
Semiconductor module for a power conversion device
HITACHI LTD51 citations96
US5731970AMar 24, 1998
Power conversion device and semiconductor module suitable for use in the device
HITACHI LTD71 citations96
US5627742AMay 6, 1997
Three level power converting apparatus having means for balancing DC component thereof
HITACHI LTD85 citations96
US5459655AOct 17, 1995
Neutral-point clamped inverter device using semiconductor modules
HITACHI LTD80 citations96
US5321599AJun 14, 1994
Control apparatus for suppressing a third harmonic neutral point voltage in a three level inverter
HITACHI LTD83 citations96
US5177677AJan 5, 1993
Power conversion system
HITACHI LTD87 citations96
US5250890AOct 5, 1993
Inverter control apparatus
HITACHI LTD59 citations95
US6642689B2Nov 4, 2003
Control apparatus for power converter
HITACHI LTD32 citations93
US6556460B2Apr 29, 2003
Method for controlling a vehicle provided with an electric power converter
HITACHI LTD22 citations93
US6456909B1Sep 24, 2002
Control apparatus of electric vehicle
HITACHI LTD47 citations92
US5680299AOct 21, 1997
Electric power conversion equipment
HITACHI LTD36 citations92
US5587891ADec 24, 1996
Electric power converting apparatus
HITACHI LTD35 citations92
US5532569AJul 2, 1996
Inverter control apparatus
HITACHI LTD33 citations92
US5506765AApr 9, 1996
Control apparatus of power converter and control apparatus of electric motor vehicle
HITACHI LTD38 citations92
US5481448AJan 2, 1996
Multilevel inverter having voltage dividing capacitors distributed across multiple arms
HITACHI LTD29 citations92
US5467262ANov 14, 1995
Electric power converting apparatus
HITACHI LTD41 citations92
US6600978B2Jul 29, 2003
Railway vehicle operation-control system and a railway vehicle using the operation control system
HITACHI LTD13 citations84
US5375050ADec 20, 1994
Electric power converter arrangement and electric rolling stock control device using the same
HITACHI LTD17 citations74
US5781423AJul 14, 1998
Pulse width modulation control system for electric power converter
HITACHI LTD16 citations72
US6633495B2Oct 14, 2003
DC apparatus and vehicle using the same
HITACHI LTD6 citations71
US11211881B2Dec 28, 2021
Power conversion device and electric railroad vehicle equipped with power conversion device
HITACHI LTD2 citations70
US11701971B2Jul 18, 2023
Three-phase AC motor drive device, rail vehicle equipped with same, and three-phase AC motor drive method
HITACHI LTD0 citations49
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD
8 patentsUSD477292SJul 15, 2003
Combined television and base
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD58 citations96
USD476632SJul 1, 2003
Monitor/television receiver
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD64 citations96
USD496341SSep 21, 2004
Television receiver
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD21 citations93
USD513501SJan 10, 2006
Combined television and base
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD18 citations92
USD515523SFeb 21, 2006
Television receiver
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD13 citations84
USD510732SOct 18, 2005
LCD television receiver with DVD-RAM recorder
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD6 citations73
USD512390SDec 6, 2005
DVD-RAM recorder with LCD television receiver
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD3 citations62
US4250808AFeb 17, 1981
Printer
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD4 citations54