Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 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 |