Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6492780 | Lamp ballast system | Chia-Ming Hsu | 2002-12-10 |
| 6215249 | Fluorescent lamp assembly | Jong-Cherng Wu, Chia-Ming Hsu | 2001-04-10 |
| 6049178 | Circuit for controlling operation of an emergency exit lamp | Chia-Ming Hsu | 2000-04-11 |