Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12239751 | UV pathogen control device and system | Denise Rippinger | 2025-03-04 |
| 8994293 | Single phase bridgeless boost converter for LED lighting applications | Peter W. Shackle | 2015-03-31 |
| 8841856 | Capacitive ladder feed for AC LED | — | 2014-09-23 |
| 8742245 | Method and apparatus for using thermionic devices to recover energy from light sources and other energy conversion devices | — | 2014-06-03 |
| 8624519 | Variable load line gas curve intercept method to optimize system efficiency | — | 2014-01-07 |
| 8531110 | Method and apparatus for using thermionic devices to recover energy from light sources and other energy conversion devices | — | 2013-09-10 |
| 6794826 | Apparatus and method for lamp ignition control | — | 2004-09-21 |
| 5914571 | Method for igniting high frequency operated, high intensity discharge lamps | — | 1999-06-22 |
| 5883475 | Method of avoiding acoustic compression wave resonance in high frequency, high intensity discharge lamps | — | 1999-03-16 |
| 5796216 | Electronic ignition enhancing circuit having both fundamental and harmonic resonant circuits as well as a DC offset | — | 1998-08-18 |
| 5416687 | Power factor correction circuit for AC to DC power supply | — | 1995-05-16 |
| 5225742 | Solid state ballast for high intensity discharge lamps | — | 1993-07-06 |
| 4296362 | Motor having electronically switched stator field current and integral torque control | — | 1981-10-20 |