Issued Patents All Time
Showing 76–97 of 97 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6807070 | Resonant converter with phase delay control | — | 2004-10-19 |
| 6803730 | Single stage PFC + ballast control circuit/general purpose power converter | Bruno Nadd, Vincent Thiery, John Ribarich | 2004-10-12 |
| 6771029 | Digital dimming fluorescent ballast | Cecelia Contenti | 2004-08-03 |
| 6734640 | System and method for electronic ballast design | Peter Green | 2004-05-11 |
| 6639369 | Electronic dimmable ballast for high intensity discharge lamp | — | 2003-10-28 |
| 6617805 | Ballast control IC with power factor correction | Dana Wilhelm | 2003-09-09 |
| 6603274 | Dimming ballast for compact fluorescent lamps | Peter Green | 2003-08-05 |
| 6525492 | Ballast control IC with minimal internal and external components | — | 2003-02-25 |
| 6331755 | Circuit for detecting near or below resonance operation of a fluorescent lamp driven by half-bridge circuit | Talbott M. Houk | 2001-12-18 |
| 6316887 | Multiple ignition high intensity discharge ballast control circuit | Robert Marenche | 2001-11-13 |
| 6300777 | Lamp ignition detection circuit | — | 2001-10-09 |
| 6259614 | Power factor correction control circuit | Robert Marenche, Dana Wilhelm | 2001-07-10 |
| 6215253 | Inductorless ballast | John Ribarich | 2001-04-10 |
| 6211623 | Fully integrated ballast IC | Dana Wilhelm, Talbott M. Houk | 2001-04-03 |
| 6150773 | Model and method for high-frequency electronic ballast design | John Ribarich, John Parry | 2000-11-21 |
| 6031342 | Universal input warm-start linear ballast | John Parry | 2000-02-29 |
| 6008592 | End of lamp life or false lamp detection circuit for an electronic ballast | — | 1999-12-28 |
| 6008593 | Closed-loop/dimming ballast controller integrated circuits | — | 1999-12-28 |
| 6002214 | Phase detection control circuit for an electronic ballast | — | 1999-12-14 |
| 5973943 | Non zero-voltage switching protection circuit | Talbott M. Houk | 1999-10-26 |
| 5563477 | Method for operating a ballast for discharge lamps | Felix Tobler | 1996-10-08 |
| 5451845 | Device for protecting a ballast circuit from excess voltage | — | 1995-09-19 |