Inventor
OHNUKI NOBUTAKA
JP4 patents
Patents
4 patentsUS4740939AApr 26, 1988
Apparatus for reproducing information recorded on a disk
HITACHI LTD22 citations81
US4163876AAug 7, 1979
Electro-acoustic transducer with variable thickness foam surfaced diaphragm
HITACHI LTD29 citations78
US4712218ADec 8, 1987
Method of and apparatus for driving semiconductor laser
HITACHI LTD16 citations73
US4805163AFeb 14, 1989
Tracking control unit in information reproducing apparatus
HITACHI LTD16 citations70