| Patent Number |
Title Of Patent |
Date Issued |
| 6716549 |
Fuel cell having metalized gas diffusion layer |
April 6, 2004 |
| A fuel cell is described and which includes an ion exchange membrane; an electrode positioned in ion exchanging relation relative to the ion exchange membrane; a gas diffusion layer borne by the electrode and having an outwardly facing surface; a porous metal coating comprising one or mo |
| 6703722 |
Reconfigurable plural DC power source power system responsive to changes in the load or the plur |
March 9, 2004 |
| A power system for supplying a power requirement of a load is described and which includes a plurality of DC power sources having at least one fuel cell, and which provides power to a load; and a control electronics assembly is provided and which is electrically coupled to the respective |
| 6703155 |
Power tap device, fuel cell stack, and method of dividing a fuel cell stack |
March 9, 2004 |
| A power tap device for use in a fuel cell stack having a plurality of stackable items including separator plates, and membrane electrode assemblies each having an anode and cathode and configured to be respectively stacked between pairs of separator plates, comprises first and second |
| 6630259 |
Fuel cell power system performing AC inversion, method of distributing AC power, and method of o |
October 7, 2003 |
| A fuel cell power system, comprising a fuel cell which generates DC voltage; a plurality of energy storage devices selectively electrically coupled with the fuel cell; and circuitry for sequentially selectively electrically coupling and decoupling the respective energy storage devices |
| 6620538 |
Method and apparatus for monitoring equivalent series resistance and for shunting a fuel cell |
September 16, 2003 |
| A fuel cell power system comprising a fuel cell having a cathode and an anode adapted to be coupled to a fuel supply, and which is configured to produce electrical power having a current and voltage output; a controller electrically coupled with the fuel cell, and configured to selective |
| 6550304 |
Method of compensating a MOS gas sensor, method of manufacturing a MOS gas sensor, MOS gas senso |
April 22, 2003 |
| A method of compensating a MOS gas sensor is described and which includes using a MOS gas sensor to provide a signal indicative of gas concentration of a target gas in an ambient; providing a signal representative of dew point of the ambient; and modifying the signal from the MOS gas sen |
| 6532792 |
Method of compensating a MOS gas sensor, method of manufacturing a MOS gas sensor, MOS gas senso |
March 18, 2003 |
| A method of compensating a MOS gas sensor is described and which includes using a MOS gas sensor to provide a signal indicative of gas concentration of a target gas in an ambient; providing a signal representative of dew point of the ambient; and modifying the signal from the MOS gas sen |
| 6497974 |
Fuel cell power system, method of distributing power, and method of operating a fuel cell power |
December 24, 2002 |
| A fuel cell power system, comprising a fuel cell which generates D.C. voltage while operating; an ultracapacitor which, in operation, is electrically coupled with a load and has a voltage condition; and a circuit which, in operation, electrically couples and decouples the fuel cell t |
| 6468682 |
Ion exchange membrane fuel cell |
October 22, 2002 |
| An ion exchange membrane fuel cell is described and which includes a module enclosing a membrane electrode diffusion assembly which has an active area defined by a surface area, and which produces an average current density of at least about 350 mA per square centimeter of surface area w |
| 6467334 |
Method for quickly rendering a MOS gas sensor operational, MOS gas sensor system, and fuel cell |
October 22, 2002 |
| A method of speeding startup of a MOS gas sensor having a sensor element for sensing a target gas, and a heater configured to heat the sensor element, and which is responsive to a voltage applied thereto. The heater has an operating temperature which is selectively maintained by applying |
| 6428918 |
Fuel cell power systems, direct current voltage converters, fuel cell power generation methods, |
August 6, 2002 |
| Fuel cell power systems, direct current voltage converters, fuel cell power generation methods, power conditioning methods and direct current power conditioning methods are provided. According to one aspect of the invention, a fuel cell power system includes a plurality of terminals |
| 6387556 |
Fuel cell power systems and methods of controlling a fuel cell power system |
May 14, 2002 |
| Fuel cell power systems and methods of controlling a fuel cell power system are provided. According to one aspect, a fuel cell power system includes a plurality of fuel cells electrically coupled with plural terminals and individually configured to convert chemical energy into electricit |
| 6383556 |
Method for forming a membrane electrode diffusion assembly for use in an ion exchange membrane f |
May 7, 2002 |
| A method for forming a membrane electrode diffusion assembly for use in an ion exchange membrane fuel cell is described and which includes, providing an ion conducting electrolyte membrane having opposite sides; and applying a first diffusion layer to one of the opposite sides of the ion |
| 6218035 |
Proton exchange membrane fuel cell power system |
April 17, 2001 |
| A proton exchange membrane fuel cell power system for producing electrical power is described and which includes a plurality of discrete fuel cell modules having at least two membrane electrode diffusion assemblies, each of the membrane electrode diffusion assemblies having opposite anod |
