Assignee
HITACHI ELEVATOR ENG & SERVICE
JP·4 granted patents·85 citations·filing 1985–1988
Top patents by PatentIndex Score
4 records- 0173US4935133AMagnetic treaterHITACHI ELEVATOR ENG & SERVICE·Filed 1988·Granted Jun 19, 1990·46 cites·11 claims
- 0258US4916368AControlling method and device for permanent magnet synchronous motorHITACHI ELEVATOR ENG & SERVICE·Filed 1988·Granted Apr 10, 1990·19 cites·8 claims
- 0339US4597992AProcess for regenerating a man conveyor handrailHITACHI ELEVATOR ENG & SERVICE·Filed 1985·Granted Jul 1, 1986·9 cites·8 claims
- 0437US4649751ASupervisory operation control system for protecting elevators or the like from a dangerous situationHITACHI ELEVATOR ENG & SERVICE·Filed 1985·Granted Mar 17, 1987·11 cites·6 claims
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