Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9397583 | Inverter modulator with variable switching frequency responsive to a sensed parameter | William L. Erdman | 2016-07-19 |
| 8625315 | Inverter modulator with variable switching frequency | William L. Erdman | 2014-01-07 |
| 8401706 | Networked multi-inverter maximum power-point tracking | William L. Erdman, Edward R. Nelson | 2013-03-19 |
| 8295989 | Local power tracking for dynamic power management in weather-sensitive power systems | Philip Rettger, Marvin S. Keshner, Alexandra Katrina Pligavko, Bodo W. Littmmann | 2012-10-23 |