Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D582590 | Portable reading lamp | Wei Ding, Song Liang, Guanjun Yang, Bo Liu, Xuan Zhu +4 more | 2008-12-09 |
| 6011360 | High efficiency dimmable cold cathode fluorescent lamp ballast | Pawel M. Gradzki, Ihor Wacyk | 2000-01-04 |
| 5907223 | Two-frequency electronic ballast system having an isolated PFC converter | Rui Liu | 1999-05-25 |
| 5811965 | DC and AC current sensor having a minor-loop operated current transformer | — | 1998-09-22 |
| 5808879 | Half-bridge zero-voltage-switched PWM flyback DC/DC converter | Rui Liu | 1998-09-15 |
| 5627717 | Electronic processing unit, and circuit breaker including such a unit | Howard Barry Pein, Gregory DiVincenzo, Paulo Caldiera, Stephen L. Wong | 1997-05-06 |
| 5598326 | High frequency AC/AC converter with PF correction | Rui Liu | 1997-01-28 |
| 5552979 | Isolated current sensor for DC to high frequency applications | Gregory DiVincenzo, Paulo Caldeira | 1996-09-03 |
| 5510974 | High frequency push-pull converter with input power factor correction | Rui Liu | 1996-04-23 |
| 5371440 | High frequency miniature electronic ballast with low RFI | Rui Liu | 1994-12-06 |