| 8487541 |
Method to ensure ballast starting regardless of half cycle input |
Bruce Richard Roberts |
2013-07-16 |
$20,112,000 |
| 8487551 |
Ultra-high efficiency ballast with end of lamp life protection |
James K. Skully |
2013-07-16 |
|
| 7948191 |
Parallel transformer with output side electrical decoupling |
James K. Skully, Haiyan Wang |
2011-05-24 |
$28,053,000 |
| 7944155 |
LED driver with single inverter circuit with isolated multi-channel outputs |
James K. Skully |
2011-05-17 |
$24,694,000 |
| 7923941 |
Low cost compact size single stage high power factor circuit for discharge lamps |
Virgil A. Chichernea, James K. Skully |
2011-04-12 |
$27,321,000 |
| 7830096 |
Circuit with improved efficiency and crest factor for current fed bipolar junction transistor (BJT) based electronic ballast |
Nitin Kumar, James K. Skully |
2010-11-09 |
$22,882,000 |
| 7759880 |
Combined ballast for fluorescent lamp and light emitting diode and method of driving same |
Istvan Maros, Istvan Bakk, Louis R. Nerone, Nitin Kumar |
2010-07-20 |
$25,829,000 |
| 7733028 |
Method and system for eliminating DC bias on electrolytic capacitors and shutdown detecting circuit for current fed ballast |
Hailiang Miao, Nitin Kumar |
2010-06-08 |
$26,106,000 |
| 7601960 |
Control for UV water disinfection |
Andy Albrecht, Larry Fish, Sam DuPlessis |
2009-10-13 |
$109,313,000 |
| 7420336 |
Method of controlling cathode voltage with low lamp's arc current |
Wei Xiong, Bruce Richard Roberts |
2008-09-02 |
$59,543,000 |
| 7382099 |
Striation control for current fed electronic ballast |
Timothy B. Gurin, James D. Mieskoski, James K. Skully |
2008-06-03 |
$41,694,000 |
| 7327101 |
Single point sensing for end of lamp life, anti-arcing, and no-load protection for electronic ballast |
Ajay Karthik Hari, Gregory Alan Harper |
2008-02-05 |
$30,171,000 |
| 7315130 |
Switching control for inverter startup and shutdown |
James K. Skully |
2008-01-01 |
|
| 7247991 |
Dimming ballast and method |
Didier Gilbert Rouaud, James K. Skully |
2007-07-24 |
$48,404,000 |
| 7193368 |
Parallel lamps with instant program start electronic ballast |
James K. Skully |
2007-03-20 |
$101,474,000 |
| 7075251 |
Universal platform for phase dimming discharge lighting ballast and lamp |
James K. Skully |
2006-07-11 |
$38,154,000 |
| 6989637 |
Method and apparatus for a voltage controlled start-up circuit for an electronic ballast |
James D. Mieskoski, Virgil A. Chichernea |
2006-01-24 |
$35,297,000 |
| 6936970 |
Method and apparatus for a unidirectional switching, current limited cutoff circuit for an electronic ballast |
James D. Mieskoski, Didier Gilbert Rouaud, Scott Michael Brandonisio |
2005-08-30 |
$23,976,000 |
| 6841951 |
Single stage HID electronic ballast |
James K. Skully |
2005-01-11 |
$54,584,000 |
| 6831423 |
High Q impedance matching inverter circuit with automatic line regulation |
— |
2004-12-14 |
$59,686,000 |
| 6677718 |
HID electronic ballast with glow to arc and warm-up control |
James K. Skully |
2004-01-13 |
$51,424,000 |
| 6653800 |
Ballast circuit with lamp cathode protection and ballast protection |
— |
2003-11-25 |
$41,541,000 |
| 6459214 |
High frequency/high power factor inverter circuit with combination cathode heating |
Melvin Cosby, James K. Skully |
2002-10-01 |
$47,424,000 |
| 6417631 |
Integrated bridge inverter circuit for discharge lighting |
Louis R. Nerone, James K. Skully |
2002-07-09 |
$46,704,000 |
| 6411524 |
Dual planar printed wiring board for compact fluorescent lamp |
James K. Skully |
2002-06-25 |
$56,960,000 |
