Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11130721 | Method for collecting hard olefin | Bu Young Jo, Won-il KIM, Jae Han Cho, Hee Chul Yeom, Dan Bi Chung +1 more | 2021-09-28 |
| 6302684 | Apparatus for opening/closing a process chamber door of ovens used for manufacturing semiconductor devices | Woo-yeul Choi | 2001-10-16 |
| 6113734 | Apparatus for opening/closing a process chamber door of ovens used for manufacturing semiconductor devices | Woo-yeul Choi | 2000-09-05 |
| 6018415 | X-Y table having belt drives for moving a stage of the table in fine increments and microscope comprising the same | Chang-Woo Woo, Kyue-sang Choi, Yeun-kyoung Shin | 2000-01-25 |