Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9213165 | Photographic lens optical system | Pil Sun Jung, Chi Ho An, Jae Hoon Cho, Ji Eun Kim | 2015-12-15 |
| 8520325 | Photographic lens optical system | Chi Ho An, Jae Hoon Cho | 2013-08-27 |