Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9520143 | Foreign language learning apparatus and method for correcting pronunciation through sentence input | — | 2016-12-13 |
| 8655806 | Disaster analysis and decision system | Yoonrak Hwang, Dong-Seop Lee, Sang Suk Lee | 2014-02-18 |