Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5075194 | Positive photoresist composition containing 4,4-diester, 4,5-diester, or 5,5-diester of spiroglycol and 1-oxo-2-diazonaphthalene-5-sulfonic acid chloride | Jong-Min Liu | 1991-12-24 |