Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12359828 | Low charge packaged ammonia refrigeration system with evaporative condenser | Kurt Liebendorfer, Trevor Hegg, Sarah L. Ferrari, Don Hamilton, Nicholas Hesser +1 more | 2025-07-15 |
| 11885513 | Low charge packaged ammonia refrigeration system with evaporative condenser | Kurt Liebendorfer, Trevor Hegg, Sarah L. Ferrari, Don Hamilton, Nicholas Hesser +1 more | 2024-01-30 |
| 11359844 | Low charge packaged refrigeration systems | Kurt Liebendorfer, Trevor Hegg | 2022-06-14 |
| 11035594 | Low charge packaged ammonia refrigeration system with evaporative condenser | Kurt Liebendorfer, Trevor Hegg, Sarah L. Ferrari, Don Hamilton, Nicholas Hesser +1 more | 2021-06-15 |
| 10520232 | Low charge packaged refrigeration systems | Kurt Liebendorfer, Trevor Hegg | 2019-12-31 |
| 9746219 | Low charge packaged refrigeration system | Kurt Liebendorfer, Trevor Hegg | 2017-08-29 |
| 7475719 | High-frequency, low-amplitude corrugated fin for a heat exchanger coil assembly | Richard P. Merrill, George R. Shriver | 2009-01-13 |
| 6889759 | Fin for heat exchanger coil assembly | — | 2005-05-10 |
| 6138464 | Defrost control for space cooling system | James A. Kitchen, Ira Z. Richter | 2000-10-31 |
| 5970726 | Defrost control for space cooling system | James A. Kitchen, Ira Z. Richter | 1999-10-26 |
| 5584340 | Heat exchanger with flexible tube support | — | 1996-12-17 |
| 5551248 | Control apparatus for space cooling system | — | 1996-09-03 |
| 4399664 | Heat pump water heater circuit | — | 1983-08-23 |
| 4299098 | Refrigeration circuit for heat pump water heater and control therefor | — | 1981-11-10 |