Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5696022 | Method for forming field oxide isolation film | — | 1997-12-09 |
| 5637529 | Method for forming element isolation insulating film of semiconductor device | Tae Sik Song | 1997-06-10 |