Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8084952 | Method and system to detect zero current conditions in an electronic ballast by monitoring voltage across a buck inductor | Yu Shiwei, Gao Qin | 2011-12-27 |
| 7768215 | Method and system for controlling transient current signals in an electronic ballast | Yu Shiwei, Gao Qin | 2010-08-03 |