Inventor

TOKUSHIGE KENJI

JP4 patents

Patents

4 patents

US6175637B1Jan 16, 2001

Acoustic transducer

SONY CORP80 citations95

US6542617B1Apr 1, 2003

Speaker

SONY CORP45 citations91

US6587571B1Jul 1, 2003

Speaker

SONY CORP13 citations82

US7574180B2Aug 11, 2009

Transmitter

SONY CORP4 citations57