Inventor · disambiguated record
Masao Nakazato
Also filed as: NAKAZATO MASAO
12 granted patents·322 citations·filing 1976–1993
93Inventor score
Files withHITACHI LTD12
Top patents by PatentIndex Score
12 records- 0192US4350225AElevator control systemHITACHI LTD·Filed 1980·Granted Sep 21, 1982·43 cites·20 claims
- 0291US4330838AElevator test operation apparatusHITACHI LTD·Filed 1979·Granted May 18, 1982·49 cites·16 claims
- 0390US4367811AElevator control systemHITACHI LTD·Filed 1981·Granted Jan 11, 1983·40 cites·9 claims
- 0489US5295568APassenger conveyor and treadboard construction for passenger conveyorHITACHI LTD·Filed 1993·Granted Mar 22, 1994·46 cites·19 claims
- 0584US4982815AElevator apparatusHITACHI LTD·Filed 1989·Granted Jan 8, 1991·29 cites·11 claims
- 0681US5025896AElevator control apparatusHITACHI LTD·Filed 1989·Granted Jun 25, 1991·35 cites·34 claims
- 0768US4884182ACurrent source power converting apparatus with overvoltage protectionHITACHI LTD·Filed 1988·Granted Nov 28, 1989·26 cites·12 claims
- 0863US4166518AElevator control systemHITACHI LTD·Filed 1977·Granted Sep 4, 1979·16 cites·11 claims
- 0961US4266632AElevator systemHITACHI LTD·Filed 1979·Granted May 12, 1981·15 cites·17 claims
- 1059US4149613AElevator control systemHITACHI LTD·Filed 1976·Granted Apr 17, 1979·14 cites·23 claims
- 1141US4779709AApparatus for controlling AC elevatorsHITACHI LTD·Filed 1986·Granted Oct 25, 1988·8 cites·7 claims
- 1230US4113066AElevator control apparatus having a novel hall call allotting deviceHITACHI LTD·Filed 1976·Granted Sep 12, 1978·1 cites·14 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →