DC

David Ki Wai Cheng

HU Hong Kong Polytechnic University: 2 patents #108 of 733Top 15%
📍 Sha Tin, CA: #44 of 72 inventorsTop 65%
Overall (All Time): #1,234,993 of 4,157,543Top 30%
4
Patents All Time

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
8274368 Chipless microwave identification tag Kai Yung, Ching Yuen Chan 2012-09-25
D636014 Violin shoulder rest 2011-04-12
7488877 Violin shoulder rest Diana C. Liu 2009-02-10
7381483 Core having magnetic properties Ka Wai Eric Cheng, Chak Yin Tang, Hang Wu 2008-06-03