Inventor
YUMINAKA TAKEO
17 patents
Patents
17 patentsUS4367811AJan 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
US4366478ADec 28, 1982
Signal transmitting and receiving apparatus
HITACHI LTD43 citations90
US3967702AJul 6, 1976
Control apparatus for elevators
HITACHI LTD35 citations90
US4030571AJun 21, 1977
Elevator control system
HITACHI LTD24 citations82
US4030572AJun 21, 1977
Elevator control apparatus
HITACHI LTD26 citations82
US3973649AAug 10, 1976
Elevator control apparatus
HITACHI LTD32 citations82
US4411338AOct 25, 1983
Apparatus for calculating elevator cage call forecast
HITACHI LTD21 citations81
US4341287AJul 27, 1982
Elevator control apparatus
HITACHI LTD17 citations73
US4166518ASep 4, 1979
Elevator control system
HITACHI LTD16 citations73
US4149613AApr 17, 1979
Elevator control system
HITACHI LTD14 citations73
US3999631ADec 28, 1976
Elevator control system
HITACHI LTD16 citations73
US4266632AMay 12, 1981
Elevator system
HITACHI LTD15 citations72
US4030037AJun 14, 1977
Proximity detecting apparatus
HITACHI LTD9 citations65
US4039049AAug 2, 1977
Elevator car call selection apparatus
HITACHI LTD4 citations55
US4113066ASep 12, 1978
Elevator control apparatus having a novel hall call allotting device
HITACHI LTD1 citations52