Inventor
DOI KAZUHIKO
JP4 patents
Patents
4 patentsUS4982816AJan 8, 1991
Speed control system for elevators
OTIS ELEVATOR CO34 citations90
US5396161AMar 7, 1995
Temperature compensator circuit for an induction motor
OTIS ELEVATOR CO7 citations71
US4903187AFeb 20, 1990
Control for variable frequency drive
OTIS ELEVATOR CO11 citations71
US5347206ASep 13, 1994
Vector control method of induction motor
OTIS ELEVATOR CO0 citations51