Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9328934 | HVAC system subcooler | John Raymond Edens | 2016-05-03 |
| 9234673 | Heat exchanger with subcooling circuit | Jonathan D. Douglas, Benton A. Harris, Jr., Stephen S. Hancock | 2016-01-12 |
| 8887518 | Expansion valve control system and method for air conditioning apparatus | John Raymond Edens, Jonathan D. Douglas | 2014-11-18 |
| 8783048 | System and Method for Oil Return in an HVAC system | John Raymond Edens, Alan D. Marble, Gary L. Sapp, James Thomas Schaefer, Kristin L. Schaefer +1 more | 2014-07-22 |
| 8417386 | System and method for defrost of an HVAC system | Jonathan D. Douglas, Darryl E. Denton, Alan D. Marble, Gary L. Sapp, Kristen L. Schaefer +1 more | 2013-04-09 |
| 8327658 | System and method for oil return in an HVAC system | Jonathan D. Douglas, John Raymond Edens, Alan D. Marble, Gary L. Sapp, James Thomas Schaefer +2 more | 2012-12-11 |
| 8151585 | System and method of disabling an HVAC compressor based on a low pressure cut out | Jonathan D. Douglas, John Raymond Edens, Alan D. Marble, Gary L. Sapp, Brett R. Schneider +1 more | 2012-04-10 |
| 8113789 | System and method of disabling an HVAC compressor based on a high pressure cut out | Jonathan D. Douglas, John Raymond Edens, Carl L. Garrett, Alan D. Marble, Gary L. Sapp +3 more | 2012-02-14 |