Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9328946 | Heat pumps with unequal cooling and heating capacities for climates where demand for cooling and heating are unequal, and method of adapting and distributing such heat pumps | Jie Chen, David L. Koesterer, Siegfried J. Weigl | 2016-05-03 |
| 9121628 | Heat pumps with unequal cooling and heating capacities for climates where demand for cooling and heating are unequal, and method of adapting and distributing such heat pumps | Jie Chen, David L. Koesterer, Siegfried J. Weigl | 2015-09-01 |
| 8672733 | Ventilation airflow rate control | Jie Chen, Aaron D. Herzon, Yi Chen | 2014-03-18 |
| 8261568 | Condensing gas package unit with a tubular conduit for passing a condensate drain line | Russell W. Hoeffken, David W. Garvin | 2012-09-11 |
| 8167610 | Premix furnace and methods of mixing air and fuel and improving combustion stability | William F. Raleigh, Robert A. Borgeson, Aaron D. Herzon, Russell W. Hoeffken | 2012-05-01 |
| 8011199 | HVAC control using discrete-speed thermostats and run times | Jie Chen, Dave L. Koesterer, Siegfried J. Weigl | 2011-09-06 |
| 7784296 | System and method for controlling an air conditioner or heat pump | Yi Chen, Jie Chen, David L. Koesterer | 2010-08-31 |
| 7770806 | Temperature control in variable-capacity HVAC system | Aaron D. Herzon | 2010-08-10 |
| 5099914 | Louvered heat exchanger fin stock | — | 1992-03-31 |
| 4709753 | Uni-directional fin-and-tube heat exchanger | — | 1987-12-01 |
| 4710610 | Electric resistance heater and limit switch assembly | James Edward Roth | 1987-12-01 |