Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7849821 | Burner flashback detection and system shutdown apparatus | Gary A. Elder, William Jason Hall, William T. Harrigill | 2010-12-14 |
| 7607408 | Water heater burner clogging detection and shutdown system | — | 2009-10-27 |
| 7387089 | Water heater with cross-sectionally elongated raw fuel jet pilot orifice | Haibo Fan | 2008-06-17 |
| 7222591 | Ducted secondary air fuel-fired water heater LDO detection | Hector J. Donastorg | 2007-05-29 |
| 7162980 | Water heater burner clogging detection and shutdown system | — | 2007-01-16 |
| 7040258 | Low NOx water heater with serpentined air entry | Troy E. Trant | 2006-05-09 |
| 7028642 | Water heater having raw fuel jet pilot and associated burner clogging detection apparatus | — | 2006-04-18 |