Issued Patents 2004
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6756142 | Fuel cell using non-linear positive temperature coefficient material | Sivakumar Muthuswamy, Ronald Kelley | 2004-06-29 |
| 6743543 | Fuel cell using variable porosity gas diffusion material | Sivakumar Muthuswamy, Ronald Kelley | 2004-06-01 |
| 6699611 | Fuel cell having a thermo-responsive polymer incorporated therein | Gene Kim, Ronald Kelley | 2004-03-02 |
| 6689194 | Fuel cell system having a replaceable getter element for purifying the fuel supply | Sivakumar Muthuswamy, Ronald Kelley, Robert W. Pennisi | 2004-02-10 |