Inventor
SOGAWA HIROYUKI
JP8 patents
Patents
8 patentsUS5276740AJan 4, 1994
Earphone device
SONY CORP137 citations97
US5022486AJun 11, 1991
Sound reproducing apparatus
SONY CORP65 citations96
US5495534AFeb 27, 1996
Audio signal reproducing apparatus
SONY CORP105 citations95
US5452359ASep 19, 1995
Acoustic signal reproducing apparatus
SONY CORP55 citations92
US5062140AOct 29, 1991
Induction speaker
SONY CORP51 citations92
US5181248AJan 19, 1993
Acoustic signal reproducing apparatus
SONY CORP54 citations89
US5228089AJul 13, 1993
Hearing aid
SONY CORP7 citations73
US4726443AFeb 23, 1988
Diaphragm
SONY CORP13 citations71