Inventor
NAKAZATO MASAO
12 patents
Patents
12 patentsUS5295568AMar 22, 1994
Passenger conveyor and treadboard construction for passenger conveyor
HITACHI LTD46 citations92
US4982815AJan 8, 1991
Elevator apparatus
HITACHI LTD29 citations92
US4884182ANov 28, 1989
Current source power converting apparatus with overvoltage protection
HITACHI LTD26 citations92
US4367811AJan 11, 1983
Elevator control system
HITACHI LTD40 citations92
US4350225ASep 21, 1982
Elevator control system
HITACHI LTD43 citations92
US4330838AMay 18, 1982
Elevator test operation apparatus
HITACHI LTD49 citations92
US5025896AJun 25, 1991
Elevator control apparatus
HITACHI LTD35 citations91
US4779709AOct 25, 1988
Apparatus for controlling AC elevators
HITACHI LTD8 citations73
US4166518ASep 4, 1979
Elevator control system
HITACHI LTD16 citations73
US4149613AApr 17, 1979
Elevator control system
HITACHI LTD14 citations73
US4266632AMay 12, 1981
Elevator system
HITACHI LTD15 citations72
US4113066ASep 12, 1978
Elevator control apparatus having a novel hall call allotting device
HITACHI LTD1 citations52