Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8239928 | Access control system and method based on hierarchical key, and authentication key exchange method thereof | Yi-Hsiung Huang, Lun-Chia Kuo, Wen-Guey Tzeng, Huan-Chung Lin | 2012-08-07 |