Issued Patents All Time
Showing 1–25 of 25 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6774768 | System and method for cycling a metal-halide lamp on and off at designated intervals to reduce risk of arc tube rupture | — | 2004-08-10 |
| 6731080 | Multiple ballast and lamp control system for selectively varying operation of ballasts to distribute burn times among lamps | — | 2004-05-04 |
| 6724155 | Lamp ignition circuit for lamp driven voltage transformation and ballasting system | Christopher Hudson | 2004-04-20 |
| 6642673 | Method and apparatus for disabling sodium ignitor upon failure of discharge lamp | Christopher Hudson | 2003-11-04 |
| 6597128 | Remote discharge lamp ignition circuitry | Christopher Hudson | 2003-07-22 |
| 6545429 | Lighting assembly having regulating transformer distally located from ballast | — | 2003-04-08 |
| 6534988 | System for testing the presence of an ignitor pulse within a high intensity discharge luminaire | — | 2003-03-18 |
| 6483260 | Apparatus for operating respective single lamps among multiple lamps coupled to the same ballast | — | 2002-11-19 |
| 6429597 | Externally mountable discharge lamp ignition circuit having visual diagnostic indicator | Christopher Hudson | 2002-08-06 |
| 6388392 | System for providing auxiliary power to lighting unit for heavy equipment having a direct current power supply and no uninterruptible power supply | — | 2002-05-14 |
| 6320328 | Method and apparatus for retrofitting gas discharge lamp ballast for use with gas discharge lamp having different power rating | Lewis W. Kenyon | 2001-11-20 |
| 6127782 | Externally mountable discharge lamp ignition circuit having visual diagnostic indicator | Christopher Hudson | 2000-10-03 |
| 6114816 | Lighting control system for discharge lamps | Joe A. Nuckolls | 2000-09-05 |
| 6091208 | Lamp ignitor for starting conventional hid lamps and for starting and restarting hid lamps with hot restrike capability | — | 2000-07-18 |
| 5955843 | Relay circuit for providing power from a normal or emergency power supply to ignite and drive a high intensity discharge lamp | Joseph A. Nuckolls | 1999-09-21 |
| 5886481 | Reduced duty cycle high intensity discharge lamp ignitor | — | 1999-03-23 |
| 5594308 | High intensity discharge lamp starting circuit with automatic disablement of starting pulses | Joe A. Nuckolls | 1997-01-14 |
| 5532553 | Operating circuit for electroluminescent panel | — | 1996-07-02 |
| 5321338 | Lamp starting circuit | Joe A. Nuckolls | 1994-06-14 |
| 5216333 | Step-dimming magnetic regulator for discharge lamps | Joe A. Nuckolls | 1993-06-01 |
| 5210471 | Controlled-current lamp starting ciruit | Joe A. Nuckolls | 1993-05-11 |
| 5047694 | Lamp starting circuit | Joe A. Nuckolls | 1991-09-10 |
| 5019751 | End-of-life lamp starter disabling circuit | Joe A. Nuckolls | 1991-05-28 |
| 4810936 | Failing lamp monitoring and deactivating circuit | Joe A. Nuckolls | 1989-03-07 |
| 4763044 | Start, hot restart and operating lamp circuit | Joe A. Nuckolls | 1988-08-09 |