JD

Jen Hao Dai

UN Unknown: 2 patents #12,644 of 83,584Top 20%
📍 Zhubei City, TW: #328 of 1,506 inventorsTop 25%
Overall (All Time): #1,003,053 of 4,157,543Top 25%
5
Patents All Time

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDate
RE45441 Hand crank generator — 2015-03-31
7893551 Hand squeeze generator — 2011-02-22
7723880 Hand crank generator — 2010-05-25
6565242 Wheel with sound and light effects — 2003-05-20
6241371 Activating device for light-emitting wheel — 2001-06-05