Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5929509 | Wafer edge seal ring structure | Chih-Heng Shen | 1999-07-27 |
| 5913979 | Method for removing spin-on-glass at wafer edge | Chih-Heng Shen | 1999-06-22 |
| 5723385 | Wafer edge seal ring structure | Chih-Heng Shen | 1998-03-03 |