Issued Patents All Time
Showing 51–75 of 79 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8049430 | Electronic ballast having a partially self-oscillating inverter circuit | Robert C. Newman, Jr. | 2011-11-01 |
| 8049432 | Measurement circuit for an electronic ballast | Robert C. Newman, Jr., Scott Edward Rhodes | 2011-11-01 |
| 8008866 | Hybrid light source | Robert C. Newman, Jr., Keith Joseph Corrigan, Aaron Dobbins, Mehmet Ozbek, Joel S. Spira | 2011-08-30 |
| 7940015 | Thermal protection for lamp ballasts | Venkatesh Chitta, Jonathan Robert Quayle, Thomas Richard Hinds | 2011-05-10 |
| 7911156 | Thermal foldback for a lamp control device | David E. Cottongim, Jecko Arakkal, Venkatesh Chitta | 2011-03-22 |
| 7868561 | Two-wire dimmer circuit for a screw-in compact fluorescent lamp | Russell Weightman | 2011-01-11 |
| 7843139 | Apparatus and method for controlling the filament voltage in an electronic dimming ballast | Brent M. Gawrys, Jecko Arakkal, Dragan Veskovic, Mark C. Fischer | 2010-11-30 |
| 7825609 | Electronic ballast having a flyback cat-ear power supply | Venkatesh Chitta, Dragan Veskovic | 2010-11-02 |
| 7675250 | Thermal protection for lamp ballasts | Venkatesh Chitta, Jonathan Robert Quayle, Thomas Richard Hinds | 2010-03-09 |
| 7586268 | Apparatus and method for controlling the filament voltage in an electronic dimming ballast | Brent M. Gawrys, Jecko Arakkal, Dragan Veskovic, Mark C. Fischer | 2009-09-08 |
| 7489090 | Electronic ballast having adaptive frequency shifting | — | 2009-02-10 |
| 7436131 | Thermal protection for lamp ballasts | David E. Cottingim, Jecko Arakkal, Venkatesh Chitta | 2008-10-14 |
| 7432661 | Electronic ballast having a flyback cat-ear power supply | Venkatesh Chitta, Dragan Veskovic | 2008-10-07 |
| 7368916 | Apparatus and methods for making capacitive measurements of cathode fall in fluorescent lamps | John F. Waymouth, Robert T. Nachtrieb, Farheen Khan, Mark Alan Hartfield, Renzo Corrado DeMeo +1 more | 2008-05-06 |
| 7339322 | Apparatus and methods for making spectroscopic measurements of cathode fall in fluorescent lamps | John F. Waymouth, Robert T. Nachtrieb, Farheen Khan, Mark Alan Hartfield, Renzo Corrado DeMeo +1 more | 2008-03-04 |
| 7323877 | Apparatus and methods for making spectroscopic measurements of cathode fall in fluorescent lamps | John F. Waymouth, Robert T. Nachtrieb, Farheen Khan, Mark Alan Hartfield, Renzo Corrado DeMeo +1 more | 2008-01-29 |
| 7312582 | Electronic ballast | Robert C. Newman, Jr., Stuart W. DeJonge, Dominick Travaglini, Joel S. Spira | 2007-12-25 |
| 7285919 | Electronic ballast having improved power factor and total harmonic distortion | Robert C. Newman, Jr., Stuart W. DeJonge, Dominick Travaglini, Joel S. Spira | 2007-10-23 |
| 7259519 | Apparatus and methods for making capacitive measurements of cathode fall in fluorescent lamps | John F. Waymouth, Robert T. Nachtrieb, Farheen Khan, Mark Alan Hartfield, Renzo Corrado DeMeo +1 more | 2007-08-21 |
| 7224124 | Apparatus and methods for making capacitive measurements of cathode fall in fluorescent lamps | John F. Waymouth, Robert T. Nachtrieb, Farheen Khan, Mark Alan Hartfield, Renzo Corrado DeMeo +1 more | 2007-05-29 |
| 7196476 | Apparatus and methods for making capacitive measurements of cathode fall in fluorescent lamps | John F. Waymouth, Robert T. Nachtrieb, Farheen Khan, Mark Alan Hartfield, Renzo Corrado DeMeo +1 more | 2007-03-27 |
| 7116055 | Apparatus and methods for making spectroscopic measurements of cathode fall in fluorescent lamps | John F. Waymouth, Robert T. Nachtrieb, Farheen Khan, Mark Alan Hartfield, Renzo Corrado DeMeo +1 more | 2006-10-03 |
| 7061189 | Electronic ballast | Robert C. Newman, Jr., Stuart W. DeJonge, Dominick Travaglini, Joel S. Spira | 2006-06-13 |
| 7002301 | Apparatus and methods for making capacitive measurements of cathode fall in fluorescent lamps | John F. Waymouth, Robert T. Nachtrieb, Farheen Khan, Mark Alan Hartfield, Renzo Corrado DeMeo +1 more | 2006-02-21 |
| 6982528 | Thermal protection for lamp ballasts | David E. Cottongim, Jecko Arakkal, Venkatesh Chitta | 2006-01-03 |