Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6950934 | Method for managing certificate revocation list by distributing it | Kyung-Hee Kang, Sun-Jung Kim, Seong-Hyoen Yang | 2005-09-27 |
| 6915423 | Method of providing time stamping service for setting client's system clock | Kyung-Hee Kang, Seung Jae Lee | 2005-07-05 |