Inventor
WATANABE EIKI
JP35 patents
⚠️ This page may combine multiple inventors who share the name “WATANABE EIKI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
MITSUBISHI ELECTRIC CORP
34 patentsUS4979593ADec 25, 1990
Elevator controller
MITSUBISHI ELECTRIC CORP111 citations96
US4666020AMay 19, 1987
Control apparatus for elevator
MITSUBISHI ELECTRIC CORP67 citations96
US5547059AAug 20, 1996
Linear motor elevator system
MITSUBISHI ELECTRIC CORP27 citations92
US5038894AAug 13, 1991
Drive control apparatus
MITSUBISHI ELECTRIC CORP22 citations92
US4935684AJun 19, 1990
Control system for induction motor
MITSUBISHI ELECTRIC CORP41 citations92
US4748394AMay 31, 1988
Control apparatus for escalator
MITSUBISHI ELECTRIC CORP34 citations92
US4678063AJul 7, 1987
Apparatus for controlling an elevator
MITSUBISHI ELECTRIC CORP40 citations92
US4567419AJan 28, 1986
Control apparatus for elevator
MITSUBISHI ELECTRIC CORP26 citations92
US4506766AMar 26, 1985
Method and apparatus for fault time operating of an elevator _
MITSUBISHI ELECTRIC CORP50 citations92
US4503940AMar 12, 1985
Variable-voltage variable-frequency elevator control apparatus
MITSUBISHI ELECTRIC CORP36 citations92
US4756398AJul 12, 1988
Passenger conveyor apparatus
MITSUBISHI ELECTRIC CORP33 citations89
US4738346AApr 19, 1988
Driving unit for passenger conveyor system
MITSUBISHI ELECTRIC CORP31 citations86
US4516665AMay 14, 1985
Elevator control system
MITSUBISHI ELECTRIC CORP22 citations82
US4434873AMar 6, 1984
Electric elevator car driving device
MITSUBISHI ELECTRIC CORP24 citations82
US4271931AJun 9, 1981
Elevator control device
MITSUBISHI ELECTRIC CORP26 citations82
US4269286AMay 26, 1981
Speed control apparatus for elevator system
MITSUBISHI ELECTRIC CORP22 citations82
US5131507AJul 21, 1992
Hydraulic elevator control apparatus using VVVF to determine the electric drive motor rotational speed
MITSUBISHI ELECTRIC CORP17 citations74
US4711335ADec 8, 1987
Display device for an escalator
MITSUBISHI ELECTRIC CORP7 citations74
US4642474AFeb 10, 1987
Elevator rescue apparatus during stoppage of power supply
MITSUBISHI ELECTRIC CORP11 citations74
US4520906AJun 4, 1985
Control apparatus for elevator
MITSUBISHI ELECTRIC CORP14 citations74
US4399892AAug 23, 1983
Thyristor Leonard type elevator control system
MITSUBISHI ELECTRIC CORP13 citations74
US4287551ASep 1, 1981
Elevator traction machine
MITSUBISHI ELECTRIC CORP17 citations74
US4284175AAug 18, 1981
Emergency stop apparatus for electric elevators
MITSUBISHI ELECTRIC CORP14 citations74
US4194594AMar 25, 1980
Elevator landing control apparatus
MITSUBISHI ELECTRIC CORP9 citations74
US4133413AJan 9, 1979
Elevator safety device
MITSUBISHI ELECTRIC CORP16 citations74
US4027745AJun 7, 1977
Elevator speed control system
MITSUBISHI ELECTRIC CORP8 citations74
US4337846AJul 6, 1982
Elevator relevelling control apparatus
MITSUBISHI ELECTRIC CORP18 citations73
US4209082AJun 24, 1980
Elevator control apparatus
MITSUBISHI ELECTRIC CORP9 citations73
US4165801AAug 28, 1979
Static Leonard system
MITSUBISHI ELECTRIC CORP9 citations73
US4086983AMay 2, 1978
Elevator control system
MITSUBISHI ELECTRIC CORP11 citations73
US4789049ADec 6, 1988
Signal transmitting equipment for elevator
MITSUBISHI ELECTRIC CORP18 citations67
US4288729ASep 8, 1981
Control system for D.C. electric motor
MITSUBISHI ELECTRIC CORP5 citations62
US4238005ADec 9, 1980
Deceleration controlling apparatus for elevator
MITSUBISHI ELECTRIC CORP4 citations62
US4293889AOct 6, 1981
Device for grounding an elevator winder
MITSUBISHI ELECTRIC CORP1 citations52