Issued Patents 2019
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10439431 | Method to reduce inrush currents in a transformer-less rectifier uninterruptible power supply system | Charles F. Blair, Xian Chen | 2019-10-08 |
| 10404094 | System and method for power sharing in a multiple UPS system | Charles F. Blair, Gregg J. Nelson | 2019-09-03 |
| 10340733 | 3-wire transformer-free UPS system and method of control to reduce common mode current | Edwin Shires, Brian P. Heber, Charles F. Blair | 2019-07-02 |
| 10277066 | Method for balancing power in paralleled converters | Brian P. Heber | 2019-04-30 |