Assignee
NAGUMO TSUTOMU
JP·4 granted patents·6 citations·filing 2011–2011
Technology mixH04R4
Top patents by PatentIndex Score
4 records- 0171US8634587B2Acoustic conversion deviceNAGUMO TSUTOMU·Filed 2011·Granted Jan 21, 2014·4 cites·7 claims
- 0256US8948439B2Acoustic conversion device and acoustic conversion device assembly methodNAGUMO TSUTOMU·Filed 2011·Granted Feb 3, 2015·1 cites·13 claims
- 0356US8630439B2Acoustic conversion device and acoustic conversion device assembly methodNAGUMO TSUTOMU·Filed 2011·Granted Jan 14, 2014·1 cites·6 claims
- 0440US8588456B2Acoustic conversion deviceNAGUMO TSUTOMU·Filed 2011·Granted Nov 19, 2013·0 cites·8 claims
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