CH

Chien Cheng Ho

PT Polytronics Technology: 1 patents #42 of 58Top 75%
Overall (All Time): #1,981,603 of 4,157,543Top 50%
2
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
9653192 PTC composition and over-current protection device containing the same Tong Cheng Tsai, Kuo-Chang Lo, Yi-An Sha 2017-05-16
D552977 Screw Tsan-Hung He 2007-10-16