Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8014773 | Mixed mobile communication system of asynchronous communication network and synchronous communication network having handover function of mobile communication terminal, and handover method in the same | Jae Young Ju, Sang-Yun Lee, Hee-Hyeok Hahm, Soo-Jin Kim, Bum-Soo Shin +3 more | 2011-09-06 |
| 7840209 | Reply voice message transmission system and method thereof | Hyun-Hoon Kwon, Tae Wook Park, Il-Weon Cho, Ki Mun Kim, Hee-Hyeok Hahm | 2010-11-23 |
| 7809800 | Method for providing the location information on a mobile station based on DBM and TCP/IP | Ki Mun Kim, Sang-Yun Lee, Hee-Hyeok Hahm, Young Ho Joo, Jae Young Ju | 2010-10-05 |
| 7260406 | Method for tracking location of subscribers in dual stack mobile communication network | Sang-Yun Lee, Hee-Hyeok Hahm, Ki Mun Kim, Young Ho Joo, Jae Young Ju | 2007-08-21 |