Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10612817 | System and method of controlling a water heater having a powered anode | Ray O. Knoeppel, Michael W. Schultz, Timothy Edward Rooney | 2020-04-07 |
| 10544962 | Water heater and method of operating the same | Andrew Robert Caves, Andrew W. Phillips, Brian Thomas Branecky, William Louis Mehlhorn, Robert Eugene Olson +1 more | 2020-01-28 |
| 9435565 | Water heater and method of operating the same | Andrew Robert Caves, Andrew W. Phillips, Brian Thomas Branecky, William Louis Mehlhorn, Robert Eugene Olson +1 more | 2016-09-06 |
| 8162232 | Water storage device having a powered anode | Ray O. Knoeppel, Mark A. Murphy | 2012-04-24 |
| 8068727 | Storage-type water heater having tank condition monitoring features | Andrew W. Phillips, Andrew Robert Caves, Ray O. Knoeppel, John Matthew Schulz | 2011-11-29 |
| 7372005 | Water storage device having a powered anode | Ray O. Knoeppel, Mark A. Murphy | 2008-05-13 |
| 7256372 | Fluid-heating apparatus, circuit for heating a fluid, and method of operating the same | Ray O. Knoeppel, Jason W. T. Scott, David E. Morris | 2007-08-14 |
| 5537019 | Switched reluctance motor providing rotor position detection at high speeds without a separate rotor shaft position sensor | Ronald Bartos, William Louis Mehlhorn, Timothy H. Houle | 1996-07-16 |
| 5525887 | Switched reluctance motor providing rotor position detection at low speeds without a separate rotor shaft position sensor | — | 1996-06-11 |
| 5497064 | Apparatus for starting a switched reluctance motor | — | 1996-03-05 |