| Patent Number |
Title Of Patent |
Date Issued |
| 7553569 |
Dynamic cathode gas control for a fuel cell system |
June 30, 2009 |
| A fuel cell system utilizes at least one flow restricting device to vary the stoichiometric quantity of cathode reactant flowing to two discrete cathode sides of the fuel cell system. The varying of the stoichiometric quantity of cathode reactant can be between two predetermined values. |
| 7525072 |
Heated O-ring |
April 28, 2009 |
| A heated O-ring that has particular application for providing sealing in the connector region of a compressed hydrogen storage tank in a fuel cell system. In one embodiment, an electrical heating wire is wound through the O-ring so that resistive heating is provide by applying an electri |
| 7494023 |
Insulation for cryogenic tanks |
February 24, 2009 |
| A magnetic multi-layer insulation system for a cryogenic storage tank. The system includes multiple layers of insulation comprising a carrier support structure disposed between a first major surface of a magnetic material defining a north pole facing away from the carrier support str |
| 7220513 |
Balanced humidification in fuel cell proton exchange membranes |
May 22, 2007 |
| A fuel cell with a gas diffusion media having a hydrophobic layer adjacent a flow field plate and a hydrophilic layer adjacent the membrane electrode assembly of the fuel cell. The two layers enable balanced humidification of reactant gas along with a basis for managing capillary wat |
