Assignee
CHANG YI-CHIEH
TW·5 granted patents·42 citations·filing 2007–2012
Top patents by PatentIndex Score
5 records- 0191US8059391B2Portable electronic deviceCHANG YI-CHIEH·Filed 2010·Granted Nov 15, 2011·21 cites·19 claims
- 0287US8324547B2Solar tracking and concentration deviceCHANG YI-CHIEH·Filed 2012·Granted Dec 4, 2012·7 cites·26 claims
- 0380US8129668B2Solar tracking and concentration deviceCHANG YI-CHIEH·Filed 2009·Granted Mar 6, 2012·8 cites·21 claims
- 0472US8097803B2Solar energy systemCHANG YI-CHIEH·Filed 2008·Granted Jan 17, 2012·3 cites·13 claims
- 0564US8060938B2Proprietary portable audio player system for protecting digital content copyrightsCHANG YI-CHIEH·Filed 2007·Granted Nov 15, 2011·3 cites·17 claims
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