Inventor · disambiguated record
Hiromi Inaba
Also filed as: INABA HIROMI · SAKAI YOSHIO
46 granted patents·2 pending applications·1,288 citations·filing 1976–2010
99Inventor score
Top patents by PatentIndex Score
48 records- 0196US6446761B1Elevator system having wireless transmitting/receiving unitsHITACHI LTD·Filed 2000·Granted Sep 10, 2002·53 cites·16 claims
- 0296US5298697AApparatus and methods for detecting number of people waiting in an elevator hall using plural image processing means with overlapping fields of viewHITACHI LTD·Filed 1992·Granted Mar 29, 1994·115 cites·11 claims
- 0395US5258586AElevator control system with image pickups in hall waiting areas and elevator carsHITACHI LTD·Filed 1990·Granted Nov 2, 1993·88 cites·26 claims
- 0493US6771000B2Electric rotary machine and power generation systems using the sameHITACHI LTD·Filed 2001·Granted Aug 3, 2004·54 cites·14 claims
- 0593US5892190AMethod and system of controlling elevators and method and apparatus of inputting requests to the control systemHITACHI LTD·Filed 1993·Granted Apr 6, 1999·49 cites·51 claims
- 0693US5307903AMethod and system of controlling elevators and method and apparatus of inputting requests to the control systemHITACHI LTD·Filed 1989·Granted May 3, 1994·54 cites·70 claims
- 0790US7137483B2Rope and elevator using the sameHITACHI LTD·Filed 2001·Granted Nov 21, 2006·40 cites·10 claims
- 0890US7134530B2Elevator system utilizing wireless transmission units to exchange control information between elevator car and elevator control unitHITACHI LTD·Filed 2005·Granted Nov 14, 2006·17 cites·14 claims
- 0990US5182776AImage processing apparatus having apparatus for correcting the image processingHITACHI LTD·Filed 1991·Granted Jan 26, 1993·52 cites·28 claims
- 1086US6570358B2Control apparatus for alternating-current motorHITACHI LTD·Filed 2001·Granted May 27, 2003·34 cites·7 claims
- 1186US6525510B1Vehicle operating systemHITACHI LTD·Filed 2002·Granted Feb 25, 2003·67 cites·16 claims
- 1286US5283399AGroup control of elevator system improvement measuresHITACHI LTD·Filed 1991·Granted Feb 1, 1994·43 cites·16 claims
- 1384US6408986B1Charger for elevator call devicesHITACHI LTD·Filed 2001·Granted Jun 25, 2002·25 cites·17 claims
- 1484US4099111AControl apparatus for DC motorHITACHI LTD·Filed 1976·Granted Jul 4, 1978·27 cites·14 claims
- 1583US7104363B2Power transmission system for elevatorMORI KAZUHISA·Filed 2001·Granted Sep 12, 2006·29 cites·15 claims
- 1680US5389749AElevator systemHITACHI LTD·Filed 1992·Granted Feb 14, 1995·51 cites·11 claims
- 1777US6598710B2Elevator system with wireless elevator control transmit/receive unitHITACHI LTD·Filed 2002·Granted Jul 29, 2003·14 cites·6 claims
- 1877US4872532ASignal transmission method and system in elevator equipmentHITACHI LTD·Filed 1988·Granted Oct 10, 1989·29 cites·20 claims
- 1976US4833586APWM control for power converter system utilizing pulse dropping at minimum pulse widthsHITACHI LTD·Filed 1987·Granted May 23, 1989·31 cites·10 claims
- 2075US7426982B2Elevator group supervisory control systemHITACHI LTD·Filed 2005·Granted Sep 23, 2008·8 cites·6 claims
- 2174US4263988ASpeed control system for a motorHITACHI LTD·Filed 1978·Granted Apr 28, 1981·23 cites·20 claims
- 2271US4787021ACurrent-type converter apparatusHITACHI LTD·Filed 1988·Granted Nov 22, 1988·26 cites·17 claims
- 2370US5408607AInformation transfer systemHITACHI LTD·Filed 1991·Granted Apr 18, 1995·67 cites·28 claims
- 2470US4870556AMethod and apparatus for controlling power converterHITACHI LTD·Filed 1987·Granted Sep 26, 1989·28 cites·26 claims
- 2568US4884182ACurrent source power converting apparatus with overvoltage protectionHITACHI LTD·Filed 1988·Granted Nov 28, 1989·26 cites·12 claims
- 2666US6481531B1Elevator communications apparatusHITACHI LTD·Filed 2001·Granted Nov 19, 2002·13 cites·13 claims
- 2766US4553640AController for elevatorHITACHI LTD·Filed 1982·Granted Nov 19, 1985·17 cites·18 claims
- 2866US4133018AThyristor fault-detecting apparatusHITACHI LTD·Filed 1977·Granted Jan 2, 1979·16 cites·6 claims
- 2964US7888893B2Control apparatus and method for linear synchronous motorHITACHI LTD·Filed 2010·Granted Feb 15, 2011·2 cites·3 claims
- 3063US7740111B2Elevator group supervisory control system with route preparation sectionHITACHI LTD·Filed 2009·Granted Jun 22, 2010·4 cites·5 claims
- 3163US6382361B2ElevatorHITACHI LTD·Filed 2000·Granted May 7, 2002·13 cites·9 claims
- 3261US6976561B2Elevator system having terminals with wireless transmitting/receiving unitHITACHI LTD·Filed 2003·Granted Dec 20, 2005·7 cites·6 claims
- 3361US5239141AGroup management control method and apparatus for an elevator systemHITACHI LTD·Filed 1990·Granted Aug 24, 1993·20 cites·10 claims
- 3461US4924373AApparatus and method for controlling switching elements in a PWN-controlled voltage source inverterHITACHI LTD·Filed 1989·Granted May 8, 1990·19 cites·16 claims
- 3561US4829416AApparatus for controlling power transducers of the pulse width modulation (PWM) control typeHITACHI LTD·Filed 1987·Granted May 9, 1989·21 cites·11 claims
- 3660US5409085AGroup control elevator system for automatically adjusting elevator operation based on a evaluation functionHITACHI LTD·Filed 1993·Granted Apr 25, 1995·19 cites·8 claims
- 3759US5155671APower converter with current-type inverterHITACHI LTD·Filed 1990·Granted Oct 13, 1992·27 cites·21 claims
- 3853US4629034AElevator control apparatusHITACHI LTD·Filed 1984·Granted Dec 16, 1986·13 cites·18 claims
- 3951US4361866APower converter apparatusHITACHI LTD·Filed 1981·Granted Nov 30, 1982·9 cites·15 claims
- 4050US7730999B2Elevator group supervisory control system using target route preparationHITACHI LTD·Filed 2008·Granted Jun 8, 2010·1 cites·4 claims
- 4148US7199547B2Apparatus, method or system for controlling mobile bodyHITACHI LTD·Filed 2001·Granted Apr 3, 2007·6 cites·16 claims
- 4243US4773508AElevator control apparatusHITACHI LTD·Filed 1988·Granted Sep 27, 1988·9 cites·4 claims
- 4343US4171505AFault detecting system for a control systemHITACHI LTD·Filed 1977·Granted Oct 16, 1979·7 cites·26 claims
- 4442US4256204ASafety apparatus for elevator systemHITACHI LTD·Filed 1978·Granted Mar 17, 1981·8 cites·7 claims
- 4540US2004026177A1ElevatorFiled 2003·Application pending·0 cites
- 4636US4636932Adv/dt Protection circuit device for an AC-DC converter apparatusHITACHI LTD·Filed 1985·Granted Jan 13, 1987·7 cites·2 claims
- 4734US2006043921A1Control apparatus and method for linear synchronous motorNAGURA HIROKAZU·Filed 2005·Application pending·0 cites
- 4830US6310456B1Control system and methodHITACHI LTD·Filed 1999·Granted Oct 30, 2001·0 cites·16 claims
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