Issued Patents All Time
Showing 1–25 of 40 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8993187 | Method and device for limiting crossover in fuel cell systems | Ronald Kelley, Sivakumar Muthuswamy, Robert W. Pennisi | 2015-03-31 |
| D578116 | Wireless router | Kevin S. Olcott, Philip Hill, Jorge I. Rodriquez, Shawn P. Welsh, Yesenia V. Escorcia | 2008-10-07 |
| 7282283 | Method and device for limiting crossover in fuel cell systems | Ronald Kelley, Sivakumar Muthuswamy, Robert W. Pennisi | 2007-10-16 |
| 7264896 | Two-stage hybrid gas pressure regulator | Ronald Kelley, Robert W. Pennisi, Sivakumar Muthuswamy | 2007-09-04 |
| D537742 | Tracking device | Yesenia V. Escorcia | 2007-03-06 |
| 7184756 | Wireless communication device with tamper resistant configuration settings | Ronald Kelley, Sivakumar Muthuswamy | 2007-02-27 |
| 7132192 | Fuel cell using variable porosity gas diffusion material | Sivakumar Muthuswamy, Ronald Kelley, Gene Kim | 2006-11-07 |
| 7108931 | Fuel cell using non-linear positive temperature coefficient material | Sivakumar Muthuswamy, Ronald Kelley | 2006-09-19 |
| 7049015 | Method of operating a fuel cell power source | Sivakumar Muthuswamy, Ronald Kelley, Robert W. Pennisi | 2006-05-23 |
| 6986957 | Fuel cell system | Bobby Dean Landreth, Sivakumar Muthuswamy, Ronald Kelley, Robert W. Pennisi | 2006-01-17 |
| 6936361 | Method for humidifying a fuel stream for a direct methanol fuel cell | Ronald Kelley, Sivakumar Muthuswamy, Robert W. Pennisi | 2005-08-30 |
| 6926990 | Fuel cell having porous electrodes and method for forming same | Ronald Kelley, Sivakumar Muthuswamy, Robert W. Pennisi | 2005-08-09 |
| 6888607 | Rewritable sign system | Bobby Dean Landreth, Robert W. Pennisi, Ronald Kelley, Sivakumar Muthuswamy, David Fredley | 2005-05-03 |
| 6869708 | Means for measuring the liquid level in a reservoir for a fuel cell | Ronald Kelley, Sivakumar Muthuswamy, Robert W. Pennisi | 2005-03-22 |
| 6853368 | Electronic device with improved user interface | Sivakumar Muthuswamy, Ronald Kelley, Robert J. Mulligan, Anupama Ramamurthy | 2005-02-08 |
| 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 |
| 6586124 | Method and apparatus for cold temperature operation of fuel cells utilizing hydrides having different heat capacities | Ronald Kelley, Sivakumar Muthuswamy, Robert W. Pennisi | 2003-07-01 |
| 6584825 | Method and apparatus for determining the amount of hydrogen in a vessel | Sivakumar Muthuswamy, Ronald Kelley, Robert W. Pennisi | 2003-07-01 |
| 6426158 | Method of diluting hydrogen gas exhausted from a fuel cell | Sivakumar Muthuswamy, Ronald Kelley, Robert W. Pennisi | 2002-07-30 |
| 6423434 | Method and apparatus for managing fuel cell performance | Ronald Kelley, Sivakumar Muthuswamy, Robert W. Pennisi | 2002-07-23 |
| 6406808 | Method and apparatus for thermal management of fuel cell systems | Ronald Kelley, Sivakumar Muthuswamy, Robert W. Pennisi | 2002-06-18 |
| D456374 | Removable cover for a portable radio | Andreas R. Haase, William H. Robertson, Jr. | 2002-04-30 |