Issued Patents All Time
Showing 26–43 of 43 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9335774 | Non-isolated intermediate bus converter | Honggang Sheng, Cornelius B. O'Sullivan | 2016-05-10 |
| 9225202 | AC power control for a power supply system during AC line disturbance | Neilus O'Sullivan | 2015-12-29 |
| 9214833 | Redundant charging and discharging MOSFET driving in battery backup system | William Leslie Dailey, Craig Kaneshiro, Shane R. Nay, Cornelius O'Sullivan | 2015-12-15 |
| 9166410 | Line balancing for a three-phase alternating current system | Anthony Tonizzo | 2015-10-20 |
| 9166423 | Battery leakage current elimination in UPS units | Jianshui Wang | 2015-10-20 |
| 9065277 | Battery backup system for uninterrupted power supply | Pascal Kam | 2015-06-23 |
| 9035609 | Hot swap control in uninterruptible power supply | Craig Kaneshiro, William Leslie Dailey | 2015-05-19 |
| 9032250 | Online testing of secondary power unit | Ken Krieger | 2015-05-12 |
| 8964374 | Vertical tray structure for rack in data center | Honggang Sheng | 2015-02-24 |
| 8872484 | Power factor correction circuitry and methodology to compensate for leading power factor | — | 2014-10-28 |
| 8810273 | Apparatus and methodology for instantaneous AC line fault detection | Ho Kong Mah | 2014-08-19 |
| 8278997 | Apparatus and methodology for controlling hot swap MOSFETs | Honggang Sheng | 2012-10-02 |
| 8270188 | Apparatus and methodology for generating an auxiliary low power output by using three-phase input power | — | 2012-09-18 |
| 7667410 | Equalizing discharge lamp currents in circuits | Wei Chen | 2010-02-23 |
| 7525258 | Current balancing techniques for fluorescent lamps | Wei Chen | 2009-04-28 |
| 7439685 | Current balancing technique with magnetic integration for fluorescent lamps | Wei Chen | 2008-10-21 |
| 7236041 | Isolated gate driver circuit for power switching devices | Wei Chen | 2007-06-26 |
| 7170268 | DC to DC converter with high frequency zigzag transformer | — | 2007-01-30 |