Issued Patents 2018
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10132510 | System and approach for water heater comfort and efficiency improvement | Ravindra Khosla, Frederick Hazzard | 2018-11-20 |
| 10088852 | Multi-tank water heater systems | Fritz Hazzard, James Holmberg, Gregory Young, Donald J. Kasprzyk, Bruce L. Hill | 2018-10-02 |
| 10049555 | Water heater leak detection system | Frederick Hazzard, Ravindra Khosla | 2018-08-14 |
| 9920930 | Thermopile assembly with heat sink | Frederick Hazzard, Ravindra Khosla | 2018-03-20 |