Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9084304 | Fault condition of detection circuit | Driss Baba, Ayan Choudhury | 2015-07-14 |
| 7696701 | Power supply for halogen lamp having an inverter and output circuit | Qinghong Yu | 2010-04-13 |
| 7560868 | Ballast with filament heating and ignition control | Qinghong Yu | 2009-07-14 |
| 7560871 | Ballast with socket-to-fixture voltage limiting | Qinghong Yu | 2009-07-14 |
| 7528558 | Ballast with ignition voltage control | Qinghong Yu | 2009-05-05 |
| 7468586 | Ballast with arc protection circuit | Qinghong Yu, Grigoriy A. Trestman, John G. Konopka | 2008-12-23 |
| 7312588 | Ballast with frequency-diagnostic lamp fault protection circuit | Qinghong Yu | 2007-12-25 |
| 7288901 | Ballast with arc protection circuit | Qinghong Yu, Grigoriy A. Trestman, John G. Konopka | 2007-10-30 |
| 7154229 | Electronic ballast with load shed circuit | Felix I. Alexandrov, Thomas Schalton | 2006-12-26 |
| 7102297 | Ballast with end-of-lamp-life protection circuit | Grigoriy A. Trestman | 2006-09-05 |
| 7068136 | Lead-in for electronic bobbins | John Selverian, William D. Koenigsberg | 2006-06-27 |
| 6906474 | Three-phase electronic ballast | Grigoriy A. Trestman, Richard Koeppl | 2005-06-14 |
| 6680587 | Electronic ballast with adaptable charge pump power factor correction | Grigoriy A. Trestman, Richard Koeppl | 2004-01-20 |