Patent | Date |
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Hybrid heat pump water heater systems and methods involving electric current, water temperature, and ambient temperature Grant 11,415,327 - Vega , et al. August 16, 2 | 2022-08-16 |
Heat Pump Water Heater Systems And Methods Thereto App 20220163221 - Vega; David I. ;   et al. | 2022-05-26 |
Air Sanitation Devices And Systems App 20220031906 - Shellenberger; Timothy J. ;   et al. | 2022-02-03 |
Applying Coatings To The Interior Surfaces Of Heat Exchangers App 20210404754 - Mantha; Divakar ;   et al. | 2021-12-30 |
Air sanitation devices and systems Grant 11,129,918 - Shellenberger , et al. September 28, 2 | 2021-09-28 |
Applying coatings to the interior surfaces of heat exchangers Grant 11,054,199 - Mantha , et al. July 6, 2 | 2021-07-06 |
Cathodic Corrosion And Dry Fire Protection Apparatus And Methods For Electric Water Heaters App 20210063052 - Boros; Jozef ;   et al. | 2021-03-04 |
Heat pump water heater Grant 10,914,491 - Boros , et al. February 9, 2 | 2021-02-09 |
Cathodic corrosion and dry fire protection apparatus and methods for electric water heaters Grant 10,837,673 - Boros , et al. November 17, 2 | 2020-11-17 |
Applying Coatings To The Interior Surfaces Of Heat Exchangers App 20200326145 - Mantha; Divakar ;   et al. | 2020-10-15 |
High efficiency gas-fired water heater Grant 10,508,830 - Zhang , et al. Dec | 2019-12-17 |
Heat Exchanger Tubes And Tube Assembly Configurations App 20190339014 - Khatami; Reza ;   et al. | 2019-11-07 |
Apparatus and methods for heating water with refrigerant and phase change material Grant 10,458,678 - Trant , et al. Oc | 2019-10-29 |
Heat Exchanger Tubes And Tube Assembly Configurations App 20180372413 - Khatami; Reza ;   et al. | 2018-12-27 |
High Efficiency Gas-fired Water Heater App 20180356126 - Zhang; Qian ;   et al. | 2018-12-13 |
Cathodic Corrosion and Dry Fire Protection Apparatus and Methods for Electric WaterHeaters App 20180051910 - Boros; Jozef ;   et al. | 2018-02-22 |
Apparatus And Methods For Heating Water With Refrigerant And Phase Change Material App 20180010822 - Trant; Troy E. ;   et al. | 2018-01-11 |
Cathodic corrosion and dry fire protection apparatus and methods for electric water heaters Grant 9,803,887 - Boros , et al. October 31, 2 | 2017-10-31 |
Heat Pump Water Heater App 20170284702 - Boros; Jozef ;   et al. | 2017-10-05 |
Cathodic Corrosion and Dry Fire Protection Apparatus and Methods for Electric Water Heaters App 20140376899 - Boros; Jozef ;   et al. | 2014-12-25 |
Water heater monitor/diagnostic display apparatus Grant 8,069,013 - Hotton , et al. November 29, 2 | 2011-11-29 |
Water heater monitor/diagnostic display apparatus Grant 7,818,095 - Hotton , et al. October 19, 2 | 2010-10-19 |
Water Heater Monitor/Diagnostic Display Apparatus App 20100193593 - Hotton; Bruce A. ;   et al. | 2010-08-05 |
Water Heater Monitor/diagnostic Display Apparatus App 20080188995 - Hotton; Bruce A. ;   et al. | 2008-08-07 |
Low NOx water heater with serpentined air entry Grant 7,040,258 - Peart , et al. May 9, 2 | 2006-05-09 |
Low Nox Water Heater With Serpentined Air Entry App 20060070585 - Peart; Jacob A. ;   et al. | 2006-04-06 |
Water heater with normally closed air inlet damper Grant 6,854,428 - Hotton , et al. February 15, 2 | 2005-02-15 |
Water heater having self-powered low NOx burner/fuel-air delivery system Grant 6,761,134 - Trant July 13, 2 | 2004-07-13 |
Power vented, fuel fired water heater with soft ignition system Grant 6,418,882 - Trant , et al. July 16, 2 | 2002-07-16 |