Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6683590 | Tricolor LED display system having audio output | Edward S. Yang, To Kwan, Chi Ho CHAN, Ka-Lim Ho | 2004-01-27 |
| 6445369 | Light emitting diode dot matrix display system with audio output | Edward S. Yang, Chris Sun-Kin Yeung, David Yang, Michael Kin-Ming Hong, To Kwan +3 more | 2002-09-03 |
| 6271815 | Handy information display system | Edward S. Yang, Yau-Yee Tam, Sing-Wai Cheung, Kai-Wing Tse, Paul Kwok | 2001-08-07 |