Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11703240 | Retrofitting R410A HVAC products to handle flammable refrigerants | Stephen A. Kujak | 2023-07-18 |
| 11162722 | Retrofitting R410A HVAC products to handle flammable refrigerants | Stephen A. Kujak | 2021-11-02 |
| 11092151 | System and method for controlling a system that includes fixed speed and variable speed compressors | John Zhou, Roger J. Voorhis, Caleb Ryan Joiner, Benjamin Hayes, James P. Crolius | 2021-08-17 |
| 10514282 | System for measuring fluid flow in a fluid passage of an HVAC system | Lane A. Liudahl | 2019-12-24 |
| 9784602 | System for measuring fluid flow in a fluid passage of an HVAC system | Lane A. Liudahl | 2017-10-10 |
| 9599118 | System and method for controlling a system that includes fixed speed and variable speed compressors | John Zhou, Roger J. Voorhis, Caleb Ryan Joiner, Benjamin Hayes, James P. Crolius | 2017-03-21 |
| 9261388 | Methods and systems to measure fluid flow | Lane A. Liudahl | 2016-02-16 |
| 7007498 | HVAC cabinet with configurable duct connections | — | 2006-03-07 |
| 6112536 | Convertible condensate drain pan | — | 2000-09-05 |
| 5823004 | Outdoor fan control for part load efficiency | Phillip L. Polley | 1998-10-20 |
| 5393224 | Ignitor assembly for power burner furnace | Thomas E. Allen, Edward D. Hildreth, Jr. | 1995-02-28 |
| 5276630 | Self configuring controller | Joe M. Baldwin, Richard A. Bishop, Phillip L. Polley | 1994-01-04 |
| 4955210 | Capillary tube assembly and method of manufacture | — | 1990-09-11 |
| 4776484 | Unitized cabinet design | — | 1988-10-11 |
| 4747505 | Unitized cabinet design | — | 1988-05-31 |
| 4543796 | Control and method for tempering supply air | Doyoung Han | 1985-10-01 |