Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11913678 | Ground heat-exchange system with water-filled boreholes | — | 2024-02-27 |
| 11754316 | Providing domestic hot water from conventional residential split system heat pumps | Rick Wylie, Robert Radcliff, Mark Winn Beutler, James H. Phillips, Jim Ramge +7 more | 2023-09-12 |
| 11137155 | Frame for an evaporative cooler | — | 2021-10-05 |
| 9257938 | Integrated system for cooling a building, collecting rainwater, and cleaning a rooftop solar array | — | 2016-02-09 |
| 7596915 | Slab edge insulating form system and methods | Brain E. Lee, Stephan Barsun, Marc A. Hoeschele, David A. Springer | 2009-10-06 |
| 7322205 | Hydronic rooftop cooling systems | Brian Eric Lee, Mark Berman | 2008-01-29 |
| 6931883 | Two stage indirect evaporative cooling system | Brian Eric Lee, Duncan Callaway | 2005-08-23 |
| 6845629 | Vertical counterflow evaporative cooler | Brian Eric Lee, Duncan Callaway | 2005-01-25 |
| 6814070 | Molded polymer solar water heater | Brian Eric Lee | 2004-11-09 |
| 6574975 | Dual evaporative pre-cooling system and method therefor | MARSHALL B. HUNT | 2003-06-10 |
| 5664433 | Indirect and direct evaporative cooling system | Joel R. Johnson | 1997-09-09 |
| 5542260 | Night-storage underfloor cooling systems | David A. Springer | 1996-08-06 |
| 5220807 | Combined refrigerator water heater | David A. Springer, Marc A. Hoeschele | 1993-06-22 |
| 5174128 | Energy-saving protected roof systems | David A. Springer | 1992-12-29 |
| 5131458 | Modular back side radiant heating panels with spring retention devices | David A. Springer | 1992-07-21 |
| 4940079 | Optimal control system for refrigeration-coupled thermal energy storage | Jerry Best, Marc A. Hoeschele, Willem Bos | 1990-07-10 |
| 4782889 | Low mass hydronic radiant floor system | — | 1988-11-08 |
| 4693089 | Three function heat pump system | Martin Fanciullo, Willem Bos | 1987-09-15 |
| 4270518 | Controller for condenser-side-storage solar heat-pump systems | — | 1981-06-02 |