Issued Patents 2020
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10753644 | Water heater | Zhongsheng Niu, Meng Yang | 2020-08-25 |
| 10612817 | System and method of controlling a water heater having a powered anode | Ray O. Knoeppel, Timothy Edward Rooney, Thomas G. Van Sistine | 2020-04-07 |