| 8754583 |
Multi-level adaptive control circuitry for deep phase-cut dimming compact fluorescent lamp |
Timothy Chen |
2014-06-17 |
| 8487551 |
Ultra-high efficiency ballast with end of lamp life protection |
Timothy Chen |
2013-07-16 |
| 7948191 |
Parallel transformer with output side electrical decoupling |
Timothy Chen, Haiyan Wang |
2011-05-24 |
| 7944155 |
LED driver with single inverter circuit with isolated multi-channel outputs |
Timothy Chen |
2011-05-17 |
| 7923941 |
Low cost compact size single stage high power factor circuit for discharge lamps |
Timothy Chen, Virgil A. Chichernea |
2011-04-12 |
| 7830096 |
Circuit with improved efficiency and crest factor for current fed bipolar junction transistor (BJT) based electronic ballast |
Timothy Chen, Nitin Kumar |
2010-11-09 |
| 7382099 |
Striation control for current fed electronic ballast |
Timothy Chen, Timothy B. Gurin, James D. Mieskoski |
2008-06-03 |
| 7315130 |
Switching control for inverter startup and shutdown |
Timothy Chen |
2008-01-01 |
| 7247991 |
Dimming ballast and method |
Timothy Chen, Didier Gilbert Rouaud |
2007-07-24 |
| 7193368 |
Parallel lamps with instant program start electronic ballast |
Timothy Chen |
2007-03-20 |
| 7075251 |
Universal platform for phase dimming discharge lighting ballast and lamp |
Timothy Chen |
2006-07-11 |
| 6841951 |
Single stage HID electronic ballast |
Timothy Chen |
2005-01-11 |
| 6677718 |
HID electronic ballast with glow to arc and warm-up control |
Timothy Chen |
2004-01-13 |
| 6594885 |
Method of making a coil |
Khaled I. Abdel-Tawab, Gordon A. Grigor, Clarence J. Harsa, Laszlo S. Ilyes, James D. Mieskoski +1 more |
2003-07-22 |
| 6459214 |
High frequency/high power factor inverter circuit with combination cathode heating |
Timothy Chen, Melvin Cosby |
2002-10-01 |
| 6417631 |
Integrated bridge inverter circuit for discharge lighting |
Timothy Chen, Louis R. Nerone |
2002-07-09 |
| 6411524 |
Dual planar printed wiring board for compact fluorescent lamp |
Timothy Chen |
2002-06-25 |
