Issued Patents All Time
Showing 1–18 of 18 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11719436 | Method and system for controlling an ignition sequence for an intermittent flame-powered pilot combustion system | Brent Chian, Timothy J. Nordberg, Rolf L. Strand, Douglas D. Bird, Peter Anderson | 2023-08-08 |
| 10866010 | High-efficiency condensing water heater | Wade Bernreuter, Matt POLHEMUS | 2020-12-15 |
| D873958 | Water heater controller | Gregory Young, Brian Moy, Don C. Kennedy, James E. Erickson | 2020-01-28 |
| 10503183 | System and method for dry fire protection in electric water heaters | — | 2019-12-10 |
| 10345007 | Method and apparatus for detecting and compensating for sediment build-up in tank-style water heaters | Lubomir Dobsik | 2019-07-09 |
| 10208954 | Method and system for controlling an ignition sequence for an intermittent flame-powered pilot combustion system | Brent Chian, Timothy J. Nordberg, Rolf L. Strand, Douglas D. Bird, Peter Anderson | 2019-02-19 |
| 10088852 | Multi-tank water heater systems | Fritz Hazzard, David Heil, James Holmberg, Gregory Young, Donald J. Kasprzyk | 2018-10-02 |
| 9885484 | Multi-tank water heater systems | Gregory Young, James Holmberg, Fritz Hazzard, Donald J. Kasprzyk | 2018-02-06 |
| 9435566 | Method and apparatus for detecting and compensating for sediment build-up in tank-style water heaters | Lubomir Dobsik | 2016-09-06 |
| 9249987 | Mounting bracket for use with a water heater | Regan Starkey FOSTER, Thomas M. Johnson, Don C. Kennedy, Lynn Fliger | 2016-02-02 |
| 8245987 | Mounting bracket for use with a water heater | Fritz Hazzard, James E. Eickson, Douglas D. Bird | 2012-08-21 |
| 7800508 | Dynamic DC biasing and leakage compensation | Brent Chian, John T. Adams, Timothy J. Nordberg, Peter Anderson | 2010-09-21 |
| 7764182 | Flame sensing system | Brent Chian, Peter Anderson, Timothy J. Nordberg | 2010-07-27 |
| 7167813 | Water heater performance monitoring system | Brent Chian, Timothy J. Nordberg | 2007-01-23 |
| 7123020 | System and method of fault detection in a warm air furnace | Rolf L. Strand, Michael W. Schultz | 2006-10-17 |
| 6050281 | Fail-safe gas valve system with solid-state drive circuit | John T. Adams, Rolf L. Strand | 2000-04-18 |
| 5865612 | Hot surface ignitor | Rolf L. Strand | 1999-02-02 |
| 5649171 | On-line video editing system | Ian Craven, Lance E. Kelson, Robert Brett Rose, Stephen J. Rentmeesters | 1997-07-15 |