Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10995268 | Etching composition effective to selectively wet etch a silicon nitride film | Sok Ho Lee, Jung Hwan Song, Seong-Sik Jeon, Sung Il Jo, Ah Hyeon Lim +1 more | 2021-05-04 |
| 10689572 | Etchant composition with high selectivity to silicon nitride | Sok Ho Lee, Jung Hwan Song, Seong-Sik Jeon, Sung Il Jo, Na Ra Han +8 more | 2020-06-23 |