Assignee
YAMAGISHI MAKOTO
JP·6 granted patents·58 citations·filing 2007–2012
Technology mixH04R6
Top patents by PatentIndex Score
6 records- 0190US8538059B2Ear speaker deviceYAMAGISHI MAKOTO·Filed 2012·Granted Sep 17, 2013·16 cites·7 claims
- 0288US8213632B2Electroacoustic transducer and ear speaker deviceYAMAGISHI MAKOTO·Filed 2007·Granted Jul 3, 2012·21 cites·30 claims
- 0387US8175316B2Ear speaker deviceYAMAGISHI MAKOTO·Filed 2007·Granted May 8, 2012·18 cites·7 claims
- 0465US8660288B2Twin driver earphoneYAMAGISHI MAKOTO·Filed 2012·Granted Feb 25, 2014·2 cites·5 claims
- 0558US8885865B2EarphoneYAMAGISHI MAKOTO·Filed 2011·Granted Nov 11, 2014·1 cites·7 claims
- 0651US8254613B2Speaker apparatusYAMAGISHI MAKOTO·Filed 2007·Granted Aug 28, 2012·0 cites·8 claims
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