Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10775070 | Method for solving charge imbalance in existing split heat pump | Tim Brizendine, Jeff Mangum | 2020-09-15 |
| 10295244 | Defrost operation management in heat pumps | Yi Qu, Mark Olsen | 2019-05-21 |
| 10041721 | Heat pump comprising primary defrost operation and secondary defrost operation and method of operating heat pump | Yi Qu, Chris McHugh, Mark Olsen | 2018-08-07 |
| 10018400 | Defrost operation management in heat pumps | Yi Qu, Mark Olsen | 2018-07-10 |
| 8549867 | Heat pump control system using passive defrost | Carl T. Crawford, Robert B. Uselton | 2013-10-08 |