Assignee
CHANG PI-CHAO
TW·9 granted patents·5 pending applications·177 citations·filing 1998–2013
Top patents by PatentIndex Score
14 records- 0194US7100295B1Measuring deviceCHANG PI-CHAO·Filed 2005·Granted Sep 5, 2006·39 cites·10 claims
- 0284USD523307SScissorsCHANG PI CHAO·Filed 2004·Granted Jun 20, 2006·30 cites·1 claims
- 0382US8020735B2Detachable threaderCHANG PI-CHAO·Filed 2009·Granted Sep 20, 2011·8 cites·6 claims
- 0479US8267752B2Knife sharpening device of circular knifeCHANG PI-CHAO·Filed 2010·Granted Sep 18, 2012·4 cites·8 claims
- 0578USD675259SCutting matCHANG PI-CHAO·Filed 2012·Granted Jan 29, 2013·24 cites·1 claims
- 0678US7204023B2Rotary cutterCHANG PI-CHAO·Filed 2004·Granted Apr 17, 2007·35 cites·8 claims
- 0770USD633361SDual-use circular knifeCHANG PI-CHAO·Filed 2009·Granted Mar 1, 2011·17 cites·1 claims
- 0867USD419412SScissorsCHANG PI CHAO·Filed 1998·Granted Jan 25, 2000·14 cites·1 claims
- 0953US2010108848A1Moving and locating device of padding plateCHANG PI-CHAO·Filed 2008·Application pending·0 cites
- 1053US2008250654A1Dual-use knife having a circular blade and a guide rod combined togetherCHANG PI-CHAO·Filed 2007·Application pending·0 cites
- 1153US2008244911A1Dual-use knife for cutting a circle and a straight lineCHANG PI-CHAO·Filed 2007·Application pending·0 cites
- 1247USD633771SCraft knife for cutting circlesCHANG PI-CHAO·Filed 2009·Granted Mar 8, 2011·6 cites·1 claims
- 1347US2014061427A1Combined pad structureCHANG PI-CHAO·Filed 2012·Application pending·0 cites
- 1445US2015000146A1Identification structure for a patchwork rulerCHANG PI-CHAO·Filed 2013·Application pending·0 cites
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →