Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9009861 | Substrate measurement apparatus with electron distortion unit | Byong Chon Park, Ju Youb Lee, Woon Song, Jin Ho Choi, Sang Jung Ahn +3 more | 2015-04-14 |
| 8153338 | Apparatus and method for repairing photo mask | Byong Chon Park, Sang Jung Ahn, Jin Ho Choi, Jae Wan Hong, Won Young Song +1 more | 2012-04-10 |