P

Inventor

ONODA YOSHIMITSU

5 patents
⚠️ This page may combine multiple inventors who share the name “ONODA YOSHIMITSU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

HITACHI LTD

3 patents
US4124812ANov 7, 1978

Braking control apparatus for an electric motor operated vehicle

HITACHI LTD30 citations81
US4306283ADec 15, 1981

Power factor improving apparatus for power converter

HITACHI LTD16 citations72
US4690251ASep 1, 1987

Emergency control system for elevators

HITACHI LTD10 citations65

HITACHI ELEVATOR ENG & SERVICE

2 patents
US4649751AMar 17, 1987

Supervisory operation control system for protecting elevators or the like from a dangerous situation

HITACHI ELEVATOR ENG & SERVICE11 citations68
US4916368AApr 10, 1990

Controlling method and device for permanent magnet synchronous motor

HITACHI ELEVATOR ENG & SERVICE19 citations67