Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7840209 | Reply voice message transmission system and method thereof | Hyun-Hoon Kwon, Tae Wook Park, Young Ahn Ryu, Ki Mun Kim, Hee-Hyeok Hahm | 2010-11-23 |
| 7221952 | Method for processing address of short message service center in IMT-2000 asynchronous network | Hyung-joon Cho, Hee-Hyeok Hahm, Sang-Yun Lee | 2007-05-22 |