Inventor
ARAKI HIROSHI
JP103 patents
⚠️ This page may combine multiple inventors who share the name “ARAKI HIROSHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
MITSUBISHI ELECTRIC CORP
31 patentsUS6827182B2Dec 7, 2004
Elevator controller
MITSUBISHI ELECTRIC CORP79 citations98
US6554107B2Apr 29, 2003
Elevator system
MITSUBISHI ELECTRIC CORP67 citations96
US5325285AJun 28, 1994
Parallel running control apparatus for PWM inverters
MITSUBISHI ELECTRIC CORP58 citations96
US5285029AFeb 8, 1994
Device for driving elevator at service interruption
MITSUBISHI ELECTRIC CORP100 citations96
US6533074B2Mar 18, 2003
Elevator apparatus with rechargeable power supply and discharge control
MITSUBISHI ELECTRIC CORP31 citations93
US6522099B2Feb 18, 2003
Elevator apparatus with rechargeable power supply and discharge control
MITSUBISHI ELECTRIC CORP34 citations93
US6457565B2Oct 1, 2002
Elevator apparatus with rechargeable power supply and discharge control
MITSUBISHI ELECTRIC CORP16 citations93
US6454053B2Sep 24, 2002
Elevator apparatus including rechargeable power supply and temperature sensitive charging control
MITSUBISHI ELECTRIC CORP28 citations93
US6334511B1Jan 1, 2002
Double-deck elevator control system
MITSUBISHI ELECTRIC CORP24 citations93
US5390102AFeb 14, 1995
Parallel running control apparatus for PWM inverters
MITSUBISHI ELECTRIC CORP27 citations93
US5034874AJul 23, 1991
PWM converter apparatus
MITSUBISHI ELECTRIC CORP27 citations93
US4984147AJan 8, 1991
Control method for PWM converter
MITSUBISHI ELECTRIC CORP44 citations93
US4847744AJul 11, 1989
Voltage converter apparatus
MITSUBISHI ELECTRIC CORP33 citations93
US6474447B2Nov 5, 2002
Elevator power control for adjusting ratio of power supplied from each of dual power sources
MITSUBISHI ELECTRIC CORP32 citations92
US6471013B2Oct 29, 2002
Apparatus for controlling charging and discharging of supplemental power supply of an elevator system
MITSUBISHI ELECTRIC CORP55 citations92
US6460658B2Oct 8, 2002
Elevator control apparatus
MITSUBISHI ELECTRIC CORP52 citations92
US6439348B2Aug 27, 2002
Elevator controller controlling charging of a battery power source with regenerative power
MITSUBISHI ELECTRIC CORP25 citations92
US6439347B2Aug 27, 2002
Elevator control apparatus controlling charging of a power source with regenerative power
MITSUBISHI ELECTRIC CORP34 citations92
US6435312B2Aug 20, 2002
Elevator speed controller responsive to power failures
MITSUBISHI ELECTRIC CORP49 citations92
US6422351B2Jul 23, 2002
Elevator speed controller responsive to dual electrical power sources
MITSUBISHI ELECTRIC CORP37 citations92
US6415892B2Jul 9, 2002
Power control including a secondary battery for powering an elevator
MITSUBISHI ELECTRIC CORP20 citations92
US5796228AAug 18, 1998
Method of controlling rotary magnet multi-phase synchronous motor and control therefor
MITSUBISHI ELECTRIC CORP55 citations92
US6435313B2Aug 20, 2002
Controller for dynamically allocating regenerative power to a rechargeable power supply of an elevator
MITSUBISHI ELECTRIC CORP19 citations84
US6431323B2Aug 13, 2002
Elevator power management system having power storage apparatus maintaining a particular charge in accordance with time of day
MITSUBISHI ELECTRIC CORP16 citations84
US9620969B2Apr 11, 2017
Storage battery equalization device capable of charging battery pack including storage battery modules having different output voltages in short time
MITSUBISHI ELECTRIC CORP11 citations83
US5400240AMar 21, 1995
Power converter apparatus
MITSUBISHI ELECTRIC CORP19 citations82
US6431324B2Aug 13, 2002
Controller scheduling constant current charging of a rechargeable power source of an elevator system
MITSUBISHI ELECTRIC CORP13 citations74
US5436823AJul 25, 1995
Parallel operation controller for power converters
MITSUBISHI ELECTRIC CORP18 citations74
US9711979B2Jul 18, 2017
Power supply system
MITSUBISHI ELECTRIC CORP4 citations73
US4721188AJan 26, 1988
Control apparatus for A.C. elevator
MITSUBISHI ELECTRIC CORP8 citations73
US10282932B2May 7, 2019
Capacitance detection device and image reading device
MITSUBISHI ELECTRIC CORP2 citations72
HITACHI LTD
5 patentsUS5400039AMar 21, 1995
Integrated multilayered microwave circuit
HITACHI LTD107 citations98
US5628053AMay 6, 1997
Integrated multilayered microwave circuit and a method of fabricating it
HITACHI LTD28 citations93
US4796993AJan 10, 1989
Phase modulation type fiber optic gyroscope
HITACHI LTD37 citations92
US4726643AFeb 23, 1988
Optical star coupler and method for manufacturing the same
HITACHI LTD34 citations91
US4842359AJun 27, 1989
Optical star coupler and method of manufacturing the same
HITACHI LTD15 citations81
FANUC LTD
3 patentsIBM
3 patentsUS10298548B2May 21, 2019
Efficient data replication of an encrypted file system
IBM5 citations73
US11188455B2Nov 30, 2021
Media import and export in storage management systems
IBM0 citations63
US10691643B2Jun 23, 2020
Deduplication for files in cloud computing storage and communication tools
IBM1 citations63
TOSHIBA CO LTD
1 patentHAMADA YUJI
1 patentMITSUBISHI DENKI KABUSKIKI KAI
1 patentSUGAWARA HISASHI
1 patentNSK LTD
1 patentFUJITSU LTD
1 patentNAT RES INST METALS
1 patentJAPAN COTTON TECHNICAL AND ECO
1 patentShowing the top 50 of 103 patents by PatentIndex Score.