Issued Patents 2016
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9376199 | Polar vessel having a derrick | Keum Dae Choo, Yu Young Lee, Jung Yul Choi, Jung-Soo Kang | 2016-06-28 |
| 9377369 | Temperature and pressure monitoring system of sealed derrick structure | Keum Dae Choo | 2016-06-28 |
| 9340268 | Floor device capable of up-down movement for vessels | In Gi Choi | 2016-05-17 |
| 9297545 | Damper structure for a sealed derrick | Keum Dae Choo | 2016-03-29 |