Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8238918 | Hand over method from asynchronous mobile communication network to synchronous mobile communication network | Sang-Yun Lee, Hee-Hyeok Hahm, Young Ho Joo, Bum-Soo Shin, Kyeong-Hee Han | 2012-08-07 |
| 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 | Sang-Yun Lee, Hee-Hyeok Hahm, Soo-Jin Kim, Bum-Soo Shin, Kyeong-Hee Han +3 more | 2011-09-06 |
| 7983676 | Inter-system handover | Young Ho Joo, Hyun Wook Kim, Young-Lak Kim | 2011-07-19 |
| 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 Ahn Ryu, Young Ho Joo | 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, Young Ahn Ryu | 2007-08-21 |
| 7257416 | Mobile location based service system and method | Sang-Yun Lee, Hee-Hyeok Hahm, Ki Mun Kim, Yeong Tae No | 2007-08-14 |