Issued Patents All Time
Showing 26–44 of 44 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9581355 | Motor/damper assembly for fuel-fired water heater | Hector J. Donastorg, Ashwin Rao, Cory A. Weiss | 2017-02-28 |
| 9234678 | Stackable water heater apparatus | Hector J. Donastorg, Raheel A. Chaudhry | 2016-01-12 |
| 9038575 | Pilot burner system for water heaters | Ashwin Rao, Subbramanian Thenappan, David L. Gibbons | 2015-05-26 |
| 9004018 | High efficiency gas-fired water heater | Qian Zhang, Yoshiki Semba, Subbu Thenappan | 2015-04-14 |
| 8069013 | Water heater monitor/diagnostic display apparatus | Bruce Hotton, Troy E. Trant, Walter T. Castleberry | 2011-11-29 |
| 7818095 | Water heater monitor/diagnostic display apparatus | Bruce Hotton, Troy E. Trant, William T. Harrigill, Walter T. Castleberry | 2010-10-19 |
| 7814868 | Fuel-fired, power vented high efficiency water heater apparatus | Jiang Yin | 2010-10-19 |
| 7337752 | Instantaneous fuel-fired water heater with low temperature plastic vent structure | Subbu Thenappan | 2008-03-04 |
| 7298968 | Pumpless combination instantaneous/storage water heater system | William T. Harrigill, Subbu Thenappan | 2007-11-20 |
| 7027723 | Water heater electrical enclosure insert/foam dam | David L. Henderson, Kenneth J. Hicks | 2006-04-11 |
| 7013841 | Differently configured fuel-fired water heaters constructed from identical production platforms | Subbu Thenappan, Walter T. Castleberry, Kenneth J. Hicks | 2006-03-21 |
| 6994056 | Water heater having a low NOx burner integrated with FVIR platform | — | 2006-02-07 |
| 6917756 | Water heater electrical enclosure insert/foam dam | David L. Henderson, Kenneth J. Hicks | 2005-07-12 |
| 6898375 | Water heater electrical enclosure insert/foam dam | David L. Henderson, Kenneth J. Hicks | 2005-05-24 |
| 6885816 | Water heater apparatus and associated manufacturing and insulation methods | Kenneth J. Hicks, David L. Henderson | 2005-04-26 |
| 6745723 | Water heater heat trap apparatus | Kenneth J. Hicks, David L. Henderson | 2004-06-08 |
| 6588378 | Water heater bottom pad/foam dam apparatus with integrated tank support members | David L. Henderson | 2003-07-08 |
| 6282372 | Multi-position point of use electric water heater | Subbu Thenappan | 2001-08-28 |
| 5941200 | Gas-fired water heater having plate-mounted removable bottom end burner and pilot assembly | Dale A. Southerland | 1999-08-24 |