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Takato Yamakoshi
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Matsudo, 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
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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