Issued Patents 2002
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6487094 | High efficiency DC-DC power converter | Jinrong Qian | 2002-11-26 |
| 6477064 | High efficiency DC-DC power converter with turn-off snubber | Jinrong Qian | 2002-11-05 |
| 6417629 | Push-pull based voltage-clamping electronic ballast | Jinrong Qian | 2002-07-09 |