Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6774097 | Resist stripper composition | Suk-Il Yoon, Young-Woong Park, Chang Il Oh, Sang-Dai Lee | 2004-08-10 |
| 6683034 | Stripper composition for negative chemically amplified resist | Chang Il Oh, Sang-Dai Lee | 2004-01-27 |