Inventor
IWAMA KIYONORI
5 patents
Patents
5 patentsUS4170742AOct 9, 1979
Piezoelectric transducer with multiple electrode areas
PIONEER ELECTRONIC CORP87 citations93
US4045695AAug 30, 1977
Piezoelectric electro-acoustic transducer
PIONEER ELECTRONIC CORP71 citations93
US4268653AMay 19, 1981
Process for preparation of a polymeric piezo-electric material and material prepared by said process
PIONEER ELECTRONIC CORP28 citations80
US3973150AAug 3, 1976
Rectangular, oriented polymer, piezoelectric diaphragm
PIONEER ELECTRONIC CORP17 citations72
US3976897AAug 24, 1976
Piezoelectric electro-acoustic diaphragm transducer with composite resilient backing
PIONEER ELECTRONIC CORP6 citations61