Inventor · disambiguated record
Masao Fujihira
Also filed as: FUJIHIRA MASAO
10 granted patents·369 citations·filing 1990–2000
92Inventor score
Technology areasH04R
Files withSONY CORP10
Top patents by PatentIndex Score
10 records- 0186US6542617B1SpeakerSONY CORP·Filed 2000·Granted Apr 1, 2003·45 cites·4 claims
- 0281US6175637B1Acoustic transducerSONY CORP·Filed 1998·Granted Jan 16, 2001·80 cites·5 claims
- 0376US6356643B2Electro-acoustic transducerSONY CORP·Filed 1999·Granted Mar 12, 2002·58 cites·14 claims
- 0471US5909496ASpeaker apparatusSONY CORP·Filed 1997·Granted Jun 1, 1999·48 cites·2 claims
- 0566US6587571B1SpeakerSONY CORP·Filed 2000·Granted Jul 1, 2003·13 cites·1 claims
- 0666US5835612ASpeaker apparatusSONY CORP·Filed 1997·Granted Nov 10, 1998·44 cites·1 claims
- 0750US5115473ATransducer having two ductsSONY CORP·Filed 1990·Granted May 19, 1992·24 cites·7 claims
- 0849US6160894ASpeaker apparatus and sound reproduction system employing sameSONY CORP·Filed 1997·Granted Dec 12, 2000·21 cites·8 claims
- 0947US5862237ASpeaker apparatusSONY CORP·Filed 1997·Granted Jan 19, 1999·19 cites·4 claims
- 1044US6035052AAcoustic transducerSONY CORP·Filed 1998·Granted Mar 7, 2000·17 cites·8 claims
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