Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9122177 | Apparatus for cleaning photomask | Yun-song Jeong, Hyung-Ho Ko, Sung-Jae Han, Chan-uk Jeon | 2015-09-01 |
| 8414708 | Method and apparatus for cleaning photomask | Yun-song Jeong, Hyung-Ho Ko, Sung-Jae Han, Chan-uk Jeon | 2013-04-09 |