Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8816533 | Uninterruptible power supply systems and methods using an isolated neutral reference | George Arthur Navarro | 2014-08-26 |
| 7561451 | Power converter apparatus and methods using a phase reference derived from a DC bus voltage | John G. Tracy, Hans-Erik Pfitzer | 2009-07-14 |