Takanobu Hatakeyama

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Nagareyama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Controller for AC elevator
- Patent number 4,661,757
- Issue date Apr 28, 1987
- Hitachi, Ltd.
- Sadao Hokari
- B66 - HOISTING LIFTING HAULING
Information Patent Grant
Controller for elevator
- Patent number 4,553,640
- Issue date Nov 19, 1985
- Hitachi, Ltd.
- Hiromi Inaba
- B66 - HOISTING LIFTING HAULING
Information Patent Grant
AC Elevator control system
- Patent number 4,441,584
- Issue date Apr 10, 1984
- Hitachi, Ltd.
- Nobuo Mitsui
- B66 - HOISTING LIFTING HAULING
Information Patent Grant
Method and apparatus for detecting elevator car position
- Patent number 4,387,436
- Issue date Jun 7, 1983
- Hitachi, Ltd.
- Yasunori Katayama
- B66 - HOISTING LIFTING HAULING
Information Patent Grant
Abnormal elevator speed detector
- Patent number 4,378,059
- Issue date Mar 29, 1983
- Hitachi, Ltd.
- Takanobu Hatakeyama
- B66 - HOISTING LIFTING HAULING
Information Patent Grant
Elevator control apparatus
- Patent number 4,150,734
- Issue date Apr 24, 1979
- Hitachi, Ltd.
- Takeshi Ohira
- B66 - HOISTING LIFTING HAULING