YC

Yi-Ching Cheng

Overall (All Time): #2,876,861 of 4,157,543Top 70%
1
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
9897133 Carbon fiber washer Chun-Han Lai, Po-Chen Sung, Chang-Mou Wu, Wen-You Lai, Po-Chun Lin 2018-02-20