Inventor · disambiguated record
Toshimitsu Tobita
Also filed as: TOBITA TOSHIMITSU
12 granted patents·586 citations·filing 1987–1993
94Inventor score
Files withHITACHI LTD12
Top patents by PatentIndex Score
12 records- 0197US5042620AElevator control systemHITACHI LTD·Filed 1989·Granted Aug 27, 1991·143 cites·14 claims
- 0294US4947965AGroup-control method and apparatus for an elevator system with plural cagesHITACHI LTD·Filed 1989·Granted Aug 14, 1990·68 cites·17 claims
- 0393US5892190AMethod 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
- 0493US5307903AMethod 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
- 0591US5010472ACustomer participatory elevator control systemHITACHI LTD·Filed 1989·Granted Apr 23, 1991·56 cites·7 claims
- 0691US4989694AElevator group supervisory systemHITACHI LTD·Filed 1989·Granted Feb 5, 1991·56 cites·20 claims
- 0786US5283399AGroup control of elevator system improvement measuresHITACHI LTD·Filed 1991·Granted Feb 1, 1994·43 cites·16 claims
- 0877US4872532ASignal transmission method and system in elevator equipmentHITACHI LTD·Filed 1988·Granted Oct 10, 1989·29 cites·20 claims
- 0970US4870556AMethod and apparatus for controlling power converterHITACHI LTD·Filed 1987·Granted Sep 26, 1989·28 cites·26 claims
- 1061US5239141AGroup management control method and apparatus for an elevator systemHITACHI LTD·Filed 1990·Granted Aug 24, 1993·20 cites·10 claims
- 1161US4829416AApparatus for controlling power transducers of the pulse width modulation (PWM) control typeHITACHI LTD·Filed 1987·Granted May 9, 1989·21 cites·11 claims
- 1260US5409085AGroup control elevator system for automatically adjusting elevator operation based on a evaluation functionHITACHI LTD·Filed 1993·Granted Apr 25, 1995·19 cites·8 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →