Issued Patents 2011
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7914594 | Air filtering device and cleaning system of semiconductor manufacturing apparatus with the same | Joo Young Kim, Ji-Young Kim, Ju-A Ryu, Yo-Han Ahn, Hyung Choi +1 more | 2011-03-29 |