Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7920548 | Intelligent switching for secure and reliable voice-over-IP PBX service | Kar-Wing Edward Lor, Kwan Shum | 2011-04-05 |
| 7836488 | Authentic device admission scheme for a secure communication network, especially a secure IP telephony network | Kar-Wing Edward Lor, Yat Tung Cheung, Kwan Shum | 2010-11-16 |