Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10542591 | LED lamp(s) with single channel driver | Yuhong Fang, Wilhelmus Josephus Cornelissen | 2020-01-21 |
| 9906153 | Two-wire neutralless digital dimmer for leading-edge dimmable lamp driver and a method of operation thereof | Shangwu Chen | 2018-02-27 |
| 9380685 | Bypass circuit for neutral-less controller in lighting control system | Deepak Shivaram Shet, Prasannakumar Gore | 2016-06-28 |
| 6628091 | Electronic switch for a bi-level fluorescent lamp fixture | John M. Griffin, Romel Panlilio | 2003-09-30 |
| 6356027 | 0-10V dimming interface protection circuit | Michael Yue Zhang, Adan F. Hernandez | 2002-03-12 |
| 6100647 | Lamp ballast for accurate control of lamp intensity | Demetri Giannopoulos, Ihor Wacyk | 2000-08-08 |
| 5872429 | Coded communication system and method for controlling an electric lamp | Yongping Xia, Raj Jayaraman, Thomas Farkas | 1999-02-16 |
| 5850127 | EBL having a feedback circuit and a method for ensuring low temperature lamp operation at low dimming levels | Joshua Zhu | 1998-12-15 |
| 5808422 | Lamp ballast with lamp rectification detection circuitry | Clint Mason, Yongping Xia, Feng-Kang Hu, Jaap Schlejen | 1998-09-15 |
| 5751115 | Lamp controller with lamp status detection and safety circuitry | Raj Jayaraman, Yongping Xia, Paul Leyton | 1998-05-12 |
| 5691605 | Electronic ballast with interface circuitry for multiple dimming inputs | Yongping Xia, Joshua Zhu, Raj Jayaraman, Thomas Farkas | 1997-11-25 |
| 5650694 | Lamp controller with lamp status detection and safety circuitry | Raj Jayaraman, Yongping Xia, Paul Leyten | 1997-07-22 |
| 5604411 | Electronic ballast having a triac dimming filter with preconditioner offset control | Gert W. Bruning, Paul R. Veldman, Thomas Farkas, Raj Jayaraman, Yongping Xia | 1997-02-18 |
| 5559395 | Electronic ballast with interface circuitry for phase angle dimming control | Thomas Farkas, Raj Jayaraman, Yongping Xia | 1996-09-24 |
| 5519313 | Temperature-compensated voltage regulator | Stephen L. Wong | 1996-05-21 |
| 5382881 | Ballast stabilization circuitry for eliminating moding or oscillation of the current envelope in gas discharge lamps and method of operating | Thomas Farkas | 1995-01-17 |
| 5272392 | Current limited power semiconductor device | Stephen L. Wong | 1993-12-21 |