Assignee

GUAN YU

US·2 granted patents·58 citations·filing 1990–2012

Technology mixG01N1 H04M1 H04R1

Top patents by PatentIndex Score

2 records

0171US5099519AHeadphonesGUAN YU·Filed 1990·Granted Mar 24, 1992·58 cites·2 claims
0242US9500597B2Determination of absolute dimensions of particles used as calibration standards for optical measurement systemGUAN YU·Filed 2012·Granted Nov 22, 2016·0 cites·25 claims

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