Inventor
HATAKEYAMA TAKANOBU
JP11 patents
⚠️ This page may combine multiple inventors who share the name “HATAKEYAMA TAKANOBU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
6 patentsUS4378059AMar 29, 1983
Abnormal elevator speed detector
HITACHI LTD33 citations90
US4387436AJun 7, 1983
Method and apparatus for detecting elevator car position
HITACHI LTD23 citations80
US4553640ANov 19, 1985
Controller for elevator
HITACHI LTD17 citations73
US4441584AApr 10, 1984
AC Elevator control system
HITACHI LTD13 citations72
US4150734AApr 24, 1979
Elevator control apparatus
HITACHI LTD12 citations67
US4661757AApr 28, 1987
Controller for AC elevator
HITACHI LTD6 citations57
HITACHI MEDICAL CORP
5 patentsUS4794506ADec 27, 1988
Resonant DC-DC converter
HITACHI MEDICAL CORP101 citations94
US4742535AMay 3, 1988
Inverter type X-ray apparatus
HITACHI MEDICAL CORP37 citations91
US5721490AFeb 24, 1998
Power source apparatus including a plurality of output current amplifiers connected in parallel and MRI apparatus using the same
HITACHI MEDICAL CORP36 citations89
US4768215AAug 30, 1988
X-ray generator with current measuring device
HITACHI MEDICAL CORP21 citations79
US4839915AJun 13, 1989
Inverter type X-ray apparatus
HITACHI MEDICAL CORP7 citations72