Inventor · disambiguated record
Yukimasa Yamaguchi
Also filed as: YAMAGUCHI YUKIMASA
6 granted patents·239 citations·filing 1991–2012
85Inventor score
Top patents by PatentIndex Score
6 records- 0191US5323257AMicrophone and microphone systemSONY CORP·Filed 1992·Granted Jun 21, 1994·184 cites·18 claims
- 0290US8538059B2Ear speaker deviceYAMAGISHI MAKOTO·Filed 2012·Granted Sep 17, 2013·16 cites·7 claims
- 0387US8175316B2Ear speaker deviceYAMAGISHI MAKOTO·Filed 2007·Granted May 8, 2012·18 cites·7 claims
- 0485US7671919B2CameraSONY CORP·Filed 2005·Granted Mar 2, 2010·10 cites·9 claims
- 0568US8913772B2Ear speaker deviceYAMAGUCHI YUKIMASA·Filed 2008·Granted Dec 16, 2014·6 cites·15 claims
- 0633US5159188AOptical reception apparatus using prism having caldera-shaped concave portionSONY CORP·Filed 1991·Granted Oct 27, 1992·5 cites·6 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →