Inventor
YOSHIMI TOSHIKAZU
JP16 patents
Patents
16 patentsUS5396563AMar 7, 1995
Earphone
PIONEER ELECTRONIC CORP90 citations96
US4980914ADec 25, 1990
Sound field correction system
PIONEER ELECTRONIC CORP68 citations96
US4739513AApr 19, 1988
Method and apparatus for measuring and correcting acoustic characteristic in sound field
PIONEER ELECTRONIC CORP83 citations96
US4403120ASep 6, 1983
Earphone
PIONEER ELECTRONIC CORP99 citations96
US4622691ANov 11, 1986
Mobile sound field correcting device
PIONEER ELECTRONIC CORP57 citations95
US4170742AOct 9, 1979
Piezoelectric transducer with multiple electrode areas
PIONEER ELECTRONIC CORP87 citations93
US4045695AAug 30, 1977
Piezoelectric electro-acoustic transducer
PIONEER ELECTRONIC CORP71 citations93
US5511132AApr 23, 1996
Communication device having air-borne and solid-borne transmitting and receiving devices
PIONEER ELECTRONIC CORP20 citations92
US4868878ASep 19, 1989
Sound field correction system
PIONEER ELECTRONIC CORP28 citations92
US4648117AMar 3, 1987
Mobile sound field correcting device
PIONEER ELECTRONIC CORP47 citations92
US4914707AApr 3, 1990
Balanced vehicular speaker system
PIONEER ELECTRONIC CORP21 citations82
US4928071AMay 22, 1990
Limiter circuit
PIONEER ELECTRONIC CORP8 citations74
US4327331AApr 27, 1982
Audio amplifier device
PIONEER ELECTRONIC CORP15 citations74
US3973150AAug 3, 1976
Rectangular, oriented polymer, piezoelectric diaphragm
PIONEER ELECTRONIC CORP17 citations72
US5043676AAug 27, 1991
Automatic level control circuit
PIONEER ELECTRONIC CORP2 citations63
US3976897AAug 24, 1976
Piezoelectric electro-acoustic diaphragm transducer with composite resilient backing
PIONEER ELECTRONIC CORP6 citations61