Inventor
MAEKAWA NORIYUKI
JP58 patents
⚠️ This page may combine multiple inventors who share the name “MAEKAWA NORIYUKI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
15 patentsUS6474572B1Nov 5, 2002
Fuel-injection valve
HITACHI LTD33 citations92
US6766789B2Jul 27, 2004
Injector driving control apparatus
HITACHI LTD22 citations90
US7819344B2Oct 26, 2010
Electro-magneto fuel injector
HITACHI LTD9 citations84
US7774126B2Aug 10, 2010
Electromagnetic fuel injection valve device
HITACHI LTD12 citations84
US7607418B2Oct 27, 2009
Fuel injection nozzle and method of holding the same
HITACHI LTD8 citations84
US6695233B2Feb 24, 2004
Electromagnetic fuel injection valve
HITACHI LTD15 citations84
US7472839B2Jan 6, 2009
Fuel injector
HITACHI LTD10 citations82
US7387263B2Jun 17, 2008
Fuel injection valve of engine, fuel injection method and assembling method of the same
HITACHI LTD7 citations74
US6685114B2Feb 3, 2004
Electromagnetic fuel injection valve
HITACHI LTD11 citations74
US6367720B1Apr 9, 2002
Electromagnetic fuel injection valve
HITACHI LTD12 citations74
US7163162B2Jan 16, 2007
Fuel-injection valve
HITACHI LTD7 citations73
US8371515B2Feb 12, 2013
Electro-magneto fuel injector
HITACHI LTD4 citations63
US6783109B2Aug 31, 2004
Electromagnetic fuel injection valve
HITACHI LTD5 citations63
US7357123B2Apr 15, 2008
Electromagnetic actuator, fuel injection valve, method of controlling fuel injection valve, and method of driving the same
HITACHI LTD6 citations60
US7095599B2Aug 22, 2006
Fuel injector and its control method
HITACHI LTD6 citations60
HITACHI ASTEMO LTD
13 patentsUS12074542B2Aug 27, 2024
Motor control device, electromechanical integrated unit, and electric vehicle system
HITACHI ASTEMO LTD2 citations73
US11716039B2Aug 1, 2023
Winding switching device and rotating electrical machine drive system using the same
HITACHI ASTEMO LTD2 citations72
US12184189B2Dec 31, 2024
Power conversion device
HITACHI ASTEMO LTD0 citations63
US11956933B2Apr 9, 2024
Power conversion device and motor-integrated power conversion device
HITACHI ASTEMO LTD0 citations63
US12581625B2Mar 17, 2026
Power conversion device
HITACHI ASTEMO LTD0 citations62
US12501714B2Dec 16, 2025
Semiconductor device, power module, inverter device, and electric vehicle
HITACHI ASTEMO LTD0 citations62
US12512727B2Dec 30, 2025
Drive system
HITACHI ASTEMO LTD0 citations61
US12581947B2Mar 17, 2026
Power semiconductor device, power conversion device, and electric system
HITACHI ASTEMO LTD0 citations52
US12506419B2Dec 23, 2025
Power conversion device
HITACHI ASTEMO LTD0 citations52
US12542471B2Feb 3, 2026
Inverter integrated motor
HITACHI ASTEMO LTD0 citations51
US12135001B2Nov 5, 2024
Fuel injection valve
HITACHI ASTEMO LTD0 citations51
US12132430B2Oct 29, 2024
Rotating machine drive system and vehicle
HITACHI ASTEMO LTD0 citations51
US12062516B2Aug 13, 2024
Switch and winding switching device
HITACHI ASTEMO LTD0 citations50
HITACHI AUTOMOTIVE SYSTEMS LTD
11 patentsUS10731594B2Aug 4, 2020
Control device for fuel injection device
HITACHI AUTOMOTIVE SYSTEMS LTD2 citations73
US9309853B2Apr 12, 2016
Fuel injection valve and fuel injection system
HITACHI AUTOMOTIVE SYSTEMS LTD3 citations73
US11136954B2Oct 5, 2021
Fuel injection valve
HITACHI AUTOMOTIVE SYSTEMS LTD4 citations71
US11098686B2Aug 24, 2021
Fuel injection valve
HITACHI AUTOMOTIVE SYSTEMS LTD2 citations71
US11703021B2Jul 18, 2023
Fuel injection device
HITACHI AUTOMOTIVE SYSTEMS LTD0 citations62
US11098670B2Aug 24, 2021
Drive device for fuel injection device
HITACHI AUTOMOTIVE SYSTEMS LTD1 citations62
US11131400B2Sep 28, 2021
High-pressure fuel supply pump and method of manufacturing the same
HITACHI AUTOMOTIVE SYSTEMS LTD0 citations60
US10859047B2Dec 8, 2020
Fuel injection device
HITACHI AUTOMOTIVE SYSTEMS LTD0 citations52
US10634105B2Apr 28, 2020
Fuel injection valve
HITACHI AUTOMOTIVE SYSTEMS LTD0 citations52
US10082117B2Sep 25, 2018
Fuel injection device
HITACHI AUTOMOTIVE SYSTEMS LTD0 citations52
US9404456B2Aug 2, 2016
Fuel injection valve
HITACHI AUTOMOTIVE SYSTEMS LTD0 citations52
HITACHI CAR ENG CO LTD
3 patentsUS7021569B1Apr 4, 2006
Fuel injection valve
HITACHI CAR ENG CO LTD24 citations91
US6908050B2Jun 21, 2005
Electromagnetic fuel injection valve
HITACHI CAR ENG CO LTD14 citations84
US7082922B2Aug 1, 2006
Fuel injection method of internal combustion engine, fuel injection valve of the same, and internal combustion engine
HITACHI CAR ENG CO LTD6 citations63
KUSAKABE RYO
3 patentsYASUKAWA YOSHIHITO
2 patentsADERANS KK
1 patentOKAMOTO YOSHIO
1 patentARITOMI SHUNSUKE
1 patentShowing the top 50 of 58 patents by PatentIndex Score.