Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11952647 | Method for manufacturing ferritic lightweight steel and ferritic lightweight steel using same | Jae Bok SEOL, Hyo Ju Bae, Kwang Gyu Koh, Hyo Kyung Sung, Young Kook Lee | 2024-04-09 |
| 10431773 | Organic light emitting display device | Eun-ah Song, Hyun Tae Byun, Kwang Nam Cho | 2019-10-01 |
| 9736859 | Method and apparatus for providing voice service in wireless local area network | Young-Jip Kim | 2017-08-15 |
| 9479351 | Method and apparatus for providing voice service in communication system | Young-Jip Kim, Gyou-Hwan Kim, Han-Seok Kim, Woon-Kyun Lee | 2016-10-25 |
| 8284763 | Voice over internet protocol gateway and a method for controlling the same | Dae-Hyun Lee | 2012-10-09 |
| 8005071 | Handling real-time transport protocol (RTP) media packets in voice over internet protocol (VoIP) terminal | — | 2011-08-23 |
| 7415004 | Method for providing voice over internet protocol call service | Eung-Moon Yeom | 2008-08-19 |
| 7376124 | Voice over internet protocol gateway and a method for controlling the same | Dae-Hyun Lee | 2008-05-20 |
| 7047283 | Apparatus and method of upgrading program of firmware board | — | 2006-05-16 |
| 6688460 | Cup transfer device for vending machine | — | 2004-02-10 |
| 6598758 | Cup transfer device for vending machine | Man-seob Lee | 2003-07-29 |
| 6304883 | Technique for managing files in telephone switching system | — | 2001-10-16 |
| 5974426 | Device and method for data recovery in a file system | Gui-Jung Lee | 1999-10-26 |