Issued Patents All Time
Showing 1–25 of 60 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8917084 | High voltage sensing mechanism with integrated on-off switch | Alex K. Choi, David Konopka | 2014-12-23 |
| 7468586 | Ballast with arc protection circuit | Qinghong Yu, Grigoriy A. Trestman, Joseph L. Parisella | 2008-12-23 |
| 7288901 | Ballast with arc protection circuit | Qinghong Yu, Grigoriy A. Trestman, Joseph L. Parisella | 2007-10-30 |
| 7218063 | Two light level ballast | Naveen Yadlapalli, Shashank Bakre, Himamshu Prasad | 2007-05-15 |
| 7157896 | Device for locating and identifying circuit breakers | — | 2007-01-02 |
| 7084579 | Two light level ballast | Naveen Yadlapalli, Shashank Bakre, Himamshu Prasad | 2006-08-01 |
| 7042161 | Ballast with arc protection circuit | — | 2006-05-09 |
| 6856100 | Ballast with inverter startup circuit | — | 2005-02-15 |
| 6768274 | Ballast with lamp-to-earth-ground fault protection circuit | Sameer Sodhi | 2004-07-27 |
| 6727662 | Dimming control system for electronic ballasts | Sivakumar Thangavelu, Sameer Sodhi | 2004-04-27 |
| 6720739 | Ballast with protection circuit for quickly responding to electrical disturbances | — | 2004-04-13 |
| 6657400 | Ballast with protection circuit for preventing inverter startup during an output ground-fault condition | Sameer Sodhi, Himamshu Prasad | 2003-12-02 |
| 6552498 | Method and circuit for controlling current in a high pressure discharge lamp | Himamshu Prasad, Young G. Kang, Warren Moscowitz | 2003-04-22 |
| 6545432 | Ballast with fast-responding lamp-out detection circuit | — | 2003-04-08 |
| 6534931 | Dimming control system for electronic ballasts | Sameer Sodhi | 2003-03-18 |
| 6501225 | Ballast with efficient filament preheating and lamp fault protection | — | 2002-12-31 |
| 6194845 | Ballasts with tapped inductor arrangements for igniting and powering high intensity discharge lamps | Guang Liu | 2001-02-27 |
| 6144539 | Arrangement for protecting low-voltage control circuitry from externally applied high voltages, and dimming ballast employing such an arrangement | Sameer Sodhi | 2000-11-07 |
| 6100652 | Ballast with starting circuit for high-intensity discharge lamps | — | 2000-08-08 |
| 5998930 | Electronic ballast with two-step boost converter and method | Anand K. Upadhyay, Bhadresh Mehta | 1999-12-07 |
| 5994847 | Electronic ballast with lamp current valley-fill power factor correction | — | 1999-11-30 |
| 5982109 | Electronic ballast with fault-protected series resonant output circuit | Jeffrey D. Merwin | 1999-11-09 |
| 5969481 | Power supply and electronic ballast with high efficiency voltage converter | — | 1999-10-19 |
| 5872430 | Single switch electronic ballast with low in-rush current | — | 1999-02-16 |
| 5869937 | High efficiency electronic ballast | — | 1999-02-09 |