Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7387713 | Resistored anode construction | Ronald D. Marcelino | 2008-06-17 |
| 6432344 | Method of making an improved polymeric immersion heating element with skeletal support and optional heat transfer fins | Charles M. Eckman | 2002-08-13 |
| 5930459 | Immersion heating element with highly thermally conductive polymeric coating | Charles M. Eckman, Arie Hochberg | 1999-07-27 |
| 5835679 | Polymeric immersion heating element with skeletal support and optional heat transfer fins | Charles M. Eckman | 1998-11-10 |
| 5334299 | Water heater having improved sacrificial anode assembly therein | — | 1994-08-02 |
| 5256267 | Resistored sacrificial anode assembly for metal tank | — | 1993-10-26 |