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Toshimitsu Tobita
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Katsuta, JP
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last 30 patents
Information
Patent Grant
Method and system of controlling elevators and method and apparatus...
Patent number
5,892,190
Issue date
Apr 6, 1999
Hitachi, Ltd.
Yuzo Morita
B66 - HOISTING LIFTING HAULING
Information
Patent Grant
Group control elevator system for automatically adjusting elevator...
Patent number
5,409,085
Issue date
Apr 25, 1995
Hitachi, Ltd.
Atsuya Fujino
B66 - HOISTING LIFTING HAULING
Information
Patent Grant
Method and system of controlling elevators and method and apparatus...
Patent number
5,307,903
Issue date
May 3, 1994
Hitachi, Ltd.
Yuzo Morita
B66 - HOISTING LIFTING HAULING
Information
Patent Grant
Group control of elevator system improvement measures
Patent number
5,283,399
Issue date
Feb 1, 1994
Hitachi, Ltd.
Atsuya Fujino
B66 - HOISTING LIFTING HAULING
Information
Patent Grant
Group management control method and apparatus for an elevator system
Patent number
5,239,141
Issue date
Aug 24, 1993
Hitachi, Ltd.
Toshimitsu Tobita
B66 - HOISTING LIFTING HAULING
Information
Patent Grant
Elevator control system
Patent number
5,042,620
Issue date
Aug 27, 1991
Hitachi, Ltd.
Kenzi Yoneda
B66 - HOISTING LIFTING HAULING
Information
Patent Grant
Customer participatory elevator control system
Patent number
5,010,472
Issue date
Apr 23, 1991
Hitachi, Ltd.
Kenzi Yoneda
B66 - HOISTING LIFTING HAULING
Information
Patent Grant
Elevator group supervisory system
Patent number
4,989,694
Issue date
Feb 5, 1991
Hitachi, Ltd.
Takaaki Ueshima
B66 - HOISTING LIFTING HAULING
Information
Patent Grant
Group-control method and apparatus for an elevator system with plur...
Patent number
4,947,965
Issue date
Aug 14, 1990
Hitachi, Ltd.
Soshiro Kuzunuki
B66 - HOISTING LIFTING HAULING
Information
Patent Grant
Signal transmission method and system in elevator equipment
Patent number
4,872,532
Issue date
Oct 10, 1989
Hitachi, Ltd.
Toshimitsu Tobita
B66 - HOISTING LIFTING HAULING
Information
Patent Grant
Method and apparatus for controlling power converter
Patent number
4,870,556
Issue date
Sep 26, 1989
Hitachi, Ltd.
Hiromi Inaba
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Apparatus for controlling power transducers of the pulse width modu...
Patent number
4,829,416
Issue date
May 9, 1989
Hitachi, Ltd.
Hiromi Inaba
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER