Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8819739 | Interactive multimedia service system and method thereof | Hong-Seo Yun, Hee-Won Park, Dong-Won Na | 2014-08-26 |
| 7894833 | Method and system for transmitting multimedia message transmitted from transmitting mobile station of higher version to receiving mobile station of lower version | Sang Mok SOHN, Hong-Seo Yun, Dong-Won Na, Hee-Won Park, Bum-Joon Kwon | 2011-02-22 |
| 7836802 | Centrifugal electric impact wrench | — | 2010-11-23 |
| 7802161 | Method of providing multimedia messaging service using unique message identifier | Sang Mok SOHN, Hong-Seo Yun, Dong-Won Na, Hee-Won Park | 2010-09-21 |
| 7792520 | Method of transmitting multimedia message in various service environments | Sang Mok SOHN, Hong-Seo Yun, Dong-Won Na | 2010-09-07 |