Assignee
LIU DAVID WANQIAN
US·4 granted patents·40 citations·filing 2007–2012
Top patents by PatentIndex Score
4 records- 0195US8086488B2Method and apparatus for defining, distributing, and redeeming SMS and MMS couponsLIU DAVID WANQIAN·Filed 2007·Granted Dec 27, 2011·35 cites·23 claims
- 0281US8209261B2Method and apparatus for connecting a network of electronic signsLIU DAVID WANQIAN·Filed 2010·Granted Jun 26, 2012·3 cites·21 claims
- 0379US8818842B2Method and apparatus for defining, distributing and redeeming SMS and MMS couponsLIU DAVID WANQIAN·Filed 2011·Granted Aug 26, 2014·2 cites·34 claims
- 0463US9489678B2Method and apparatus for connecting a network of electronic signsLIU DAVID WANQIAN·Filed 2012·Granted Nov 8, 2016·0 cites·22 claims
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