Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10266230 | Frictional resistance-reducing device and ship including same | Jin Jang, Su Heun Kwen, Sang Min Kim, Jin Kyu Kim, Jin Hak Kim +4 more | 2019-04-23 |
| 8192240 | Contra-rotating propeller supported on rudder horn of ship | Soon Ho Choi, Seong Sun Rhyu, Se-Myun Oh | 2012-06-05 |