Issued Patents All Time
Showing 25 most recent of 26 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11239745 | Power converter including a recirculating snubber | — | 2022-02-01 |
| 11162988 | Load impedance tester and measurement method | — | 2021-11-02 |
| 10164520 | Short circuit protection for switching power converters | Alexandr L. Kristalinski | 2018-12-25 |
| 8462525 | Wide range DC power supply with bypassed multiplier circuits | Geoffrey N. Drummond | 2013-06-11 |
| 7619910 | Interleaved soft switching bridge power converter | Milan Ilic | 2009-11-17 |
| 7289341 | Power supply adaptive feedforward control circuit | — | 2007-10-30 |
| 7247998 | Transient detection of end of lamp life condition apparatus and method | Tom Poehlman | 2007-07-24 |
| 7228793 | Carbonation system for enhancing the flavor of fruits and vegetables | Qingyue Ling, Galen D. Kaufman, John Henry Wells | 2007-06-12 |
| 6979980 | Soft switching interleaved power converter | Milan Ilic, Andrey Malinin, Kalyan Siddabattula | 2005-12-27 |
| 6697265 | Wide range DC power supply utilizing voltage doubling output capacitors and inductive choke to extend full power load impedance range | Geoffrey N. Drummond | 2004-02-24 |
| 6291944 | System and method for limiting through-lamp ground fault currents in non-isolated electronic ballasts | Ali Fawaz | 2001-09-18 |
| 6281641 | Electronic ballast for one or more lamps | Daoshen Chen | 2001-08-28 |
| 6262565 | Electrical load switch | Jonathan D. Williams, Doug Myron, David Martini, Lorenzo Cincinelli, Richard F. Frankeny +2 more | 2001-07-17 |
| 6204613 | Protected dimming control interface for an electronic ballast | — | 2001-03-20 |
| 5959408 | Symmetry control circuit for pre-heating in electronic ballasts | John F. Steel | 1999-09-28 |
| 5877592 | Programmed-start parallel-resonant electronic ballast | Ben A. Beer | 1999-03-02 |
| 5838181 | Pulse-width modulator circuit for use in low-cost power factor correction circuit | — | 1998-11-17 |
| 5831395 | Three-way fluorescent adapter | George W. Mortimer | 1998-11-03 |
| 5731666 | Integrated-magnetic filter having a lossy shunt | Don V. Folker, Dan Soule, George W. Mortimer | 1998-03-24 |
| 5650925 | Diode clamping arrangement for use in electronic ballasts | — | 1997-07-22 |
| 5635799 | Lamp protection circuit for electronic ballasts | — | 1997-06-03 |
| 5614810 | Power factor correction circuit | Allan A. Nostwick | 1997-03-25 |
| 5583402 | Symmetry control circuit and method | Mihail S. Moisin, Antonio M. Marques, Allan A. Nostwick | 1996-12-10 |
| 5568041 | Low-cost power factor correction circuit and method for electronic ballasts | — | 1996-10-22 |
| 5166869 | Complementary electronic power converter | — | 1992-11-24 |