YC

Ying-Yi Chang

UM United Microelectronics: 2 patents #1,942 of 4,560Top 45%
Overall (All Time): #2,084,907 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
8105648 Method for operating a chemical deposition chamber Chien-Hsin Lai, Tzu-Chin Tseng 2012-01-31
7726953 Pump ring Jian-Shing Lai 2010-06-01