P

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 patents
US6827182B2Dec 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 patents

FANUC LTD

3 patents

IBM

3 patents

TOSHIBA CO LTD

1 patent

HAMADA YUJI

1 patent

MITSUBISHI DENKI KABUSKIKI KAI

1 patent

SUGAWARA HISASHI

1 patent

NSK LTD

1 patent

FUJITSU LTD

1 patent

NAT RES INST METALS

1 patent

JAPAN COTTON TECHNICAL AND ECO

1 patent

Showing the top 50 of 103 patents by PatentIndex Score.