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Yoshimitsu Onoda
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Katsuta, JP
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last 30 patents
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Patent Grant
Controlling method and device for permanent magnet synchronous motor
Patent number
4,916,368
Issue date
Apr 10, 1990
Hitachi Elevator Engineering & Service Company, Ltd.
Yoshimitsu Onoda
B66 - HOISTING LIFTING HAULING
Information
Patent Grant
Emergency control system for elevators
Patent number
4,690,251
Issue date
Sep 1, 1987
Hitachi, Ltd.
Yoshimitsu Onoda
B66 - HOISTING LIFTING HAULING
Information
Patent Grant
Supervisory operation control system for protecting elevators or th...
Patent number
4,649,751
Issue date
Mar 17, 1987
Hitachi Elevator Engineering and Service Co., Ltd.
Yoshimitsu Onoda
G08 - SIGNALLING
Information
Patent Grant
Power factor improving apparatus for power converter
Patent number
4,306,283
Issue date
Dec 15, 1981
Hitachi, Ltd.
Hisakatsu Kiwaki
B60 - VEHICLES IN GENERAL
Information
Patent Grant
Braking control apparatus for an electric motor operated vehicle
Patent number
4,124,812
Issue date
Nov 7, 1978
Hitachi, Ltd.
Shotaro Naito
B60 - VEHICLES IN GENERAL