Issued Patents All Time
Showing 26–50 of 55 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6037722 | Dimmable ballast apparatus and method for controlling power delivered to a fluorescent lamp | — | 2000-03-14 |
| 6028399 | Ballast circuit with a capacitive and inductive feedback path | — | 2000-02-22 |
| 6020688 | Converter/inverter full bridge ballast circuit | — | 2000-02-01 |
| 6011362 | Magnetic ballast adaptor circuit | — | 2000-01-04 |
| 5982111 | Fluorescent lamp ballast having a resonant output stage using a split resonating inductor | — | 1999-11-09 |
| 5955841 | Ballast circuit for fluorescent lamp | Mark E. Martich | 1999-09-21 |
| 5925986 | Method and apparatus for controlling power delivered to a fluorescent lamp | — | 1999-07-20 |
| 5877926 | Common mode ground fault signal detection circuit | — | 1999-03-02 |
| 5866993 | Three-way dimming ballast circuit with passive power factor correction | — | 1999-02-02 |
| 5821699 | Ballast circuit for fluorescent lamps | — | 1998-10-13 |
| 5798617 | Magnetic feedback ballast circuit for fluorescent lamp | — | 1998-08-25 |
| 5691606 | Ballast circuit for fluorescent lamp | Mark E. Martich | 1997-11-25 |
| 5686799 | Ballast circuit for compact fluorescent lamp | Mark E. Martich | 1997-11-11 |
| 5608295 | Cost effective high performance circuit for driving a gas discharge lamp load | — | 1997-03-04 |
| 5583402 | Symmetry control circuit and method | Bryce L. Hesterman, Antonio M. Marques, Allan A. Nostwick | 1996-12-10 |
| 5332951 | Circuit for driving gas discharge lamps having protection against diode operation of the lamps | Thomas W. Turner | 1994-07-26 |
| 5220247 | Circuit for driving a gas discharge lamp load | — | 1993-06-15 |
| 5148087 | Circuit for driving a gas discharge lamp load | John G. Konopka | 1992-09-15 |
| 5144195 | Circuit for driving at least one gas discharge lamp | John G. Konopka | 1992-09-01 |
| 5138234 | Circuit for driving a gas discharge lamp load | — | 1992-08-11 |
| 5138236 | Circuit for driving a gas discharge lamp load | Andrew C. Bobel | 1992-08-11 |
| 5138233 | Driver circuit for a plurality of gas discharge lamps | Andrew C. Bobel | 1992-08-11 |
| 5124619 | Circuit for driving a gas discharge lamp load | Kent E. Crouse | 1992-06-23 |
| 5081401 | Driver circuit for a plurality of gas discharge lamps | — | 1992-01-14 |
| 5052039 | Line interface circuit | — | 1991-09-24 |