PC

Patrick Cheng

UM United Microelectronics: 3 patents #1,523 of 4,560Top 35%
Overall (All Time): #1,620,165 of 4,157,543Top 40%
3
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
6176770 Grindstone having a vacuum system in a pin chuck stepper Chung-Hsien Kao, Li-Chung Lee, Mei-Ling Chen 2001-01-23
6125644 Container of coolant Shih-Hsun Chiu, Li-Chung Lee, Wei-Sheng Chia 2000-10-03
6021669 Container of coolant Shih-Hsun Chiu, Li-Chung Lee, Wei-Sheng Chia 2000-02-08