Issued Patents 2018
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9948581 | Allow hidden and silent observers in a group conversation | Hon Chung Tang, Ka Chun Wong, Wing Kong Yip | 2018-04-17 |
| 9912618 | Allow hidden and silent observers in a group conversation | Hon Chung Tang, Ka Chun Wong, Wing Kong Yip | 2018-03-06 |