Assignee
CHANG HAN CHAO
3 granted patents·1 pending application·33 citations·filing 2005–2007
Top patents by PatentIndex Score
4 records- 0184US7314325B2Pen-and-electronic device assemblyCHANG HAN-CHAO·Filed 2005·Granted Jan 1, 2008·11 cites·8 claims
- 0284US7186931B2Button fastening device with circuit actuating capabilityCHANG HAN-CHAO·Filed 2005·Granted Mar 6, 2007·14 cites·14 claims
- 0376US7837038B2Gift package having circuit actuating capabilityCHANG HAN-CHAO·Filed 2007·Granted Nov 23, 2010·8 cites·12 claims
- 0450US2011273280A1Medicament reminder deviceCHANG HAN CHAO·Filed 2007·Application pending·0 cites
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →