Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9226322 | Mobile communication terminal having emergency call unit and method of making emergency call using the same | Seong-Soo Kim, Soon Chul Choi, Won Jong Jee | 2015-12-29 |
| 9042026 | Optical system for head-mounted display | Soon Chul Choi | 2015-05-26 |
| 8896926 | Optical system for head-mounted display | Soon Chul Choi | 2014-11-25 |