Issued Patents All Time
Showing 26–35 of 35 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8006084 | Apparatus and method for managing plurality of certificates | Yun-sang Oh, Sang Gyoo SIM, Suk-bong Lee | 2011-08-23 |
| 8005118 | Method and apparatus for implementing secure clock in device having no internal power source | Sang Gyoo SIM, Yun-sang Oh, Suk-bong Lee | 2011-08-23 |
| 7882291 | Apparatus and method for operating plural applications between portable storage device and digital device | Yun-sang Oh, Tae-Sung Kim, Shin-Han Kim | 2011-02-01 |
| 7870397 | Method and apparatus for managing digital rights of portable storage device | Byung-Rae Lee, Joong-Chul Yoon, Moon-sang Kwon, Shin-Han Kim, Jae Jin Choi | 2011-01-11 |
| 7854010 | Method and apparatus for searching rights object and mapping method and mapping apparatus for the same | Yeo-jin Kim, Yun-sang Oh, Sang Gyoo SIM, Ji Soo Kim | 2010-12-14 |
| 7810162 | Method and apparatus for playing back content based on digital rights management between portable storage and device, and portable storage for the same | Byung-Rae Lee, Tae-Sung Kim, Yun-sang Oh | 2010-10-05 |
| 7779479 | Method and apparatus for playing back content based on digital rights management between portable storage and device, and portable storage for the same | Byung-Rae Lee, Yun-sang Oh, Tae-Sung Kim, Shin-Han Kim | 2010-08-17 |
| 7571852 | Method and apparatus for searching rights objects stored in portable storage device using object location data | Moon-sang Kwon, Yun-sang Oh | 2009-08-11 |
| 7272383 | System and method for controlling a mobile terminal using a digital signature | — | 2007-09-18 |
| 7255270 | Method and apparatus for searching rights objects stored in portable storage device using object location data | Moon-sang Kwon, Yun-sang Oh | 2007-08-14 |