Assignee
AVISTA LAB INC
US·14 granted patents·840 citations·filing 1999–2002
Top patents by PatentIndex Score
14 records- 0196US6468682B1Ion exchange membrane fuel cellAVISTA LAB INC·Filed 2000·Granted Oct 22, 2002·78 cites·94 claims
- 0296US6387556B1Fuel cell power systems and methods of controlling a fuel cell power systemAVISTA LAB INC·Filed 1999·Granted May 14, 2002·171 cites·300 claims
- 0392US6218035B1Proton exchange membrane fuel cell power systemAVISTA LAB INC·Filed 1999·Granted Apr 17, 2001·123 cites·29 claims
- 0491US6620538B2Method and apparatus for monitoring equivalent series resistance and for shunting a fuel cellAVISTA LAB INC·Filed 2002·Granted Sep 16, 2003·44 cites·36 claims
- 0590US6703722B2Reconfigurable plural DC power source power system responsive to changes in the load or the plural DC power sourcesAVISTA LAB INC·Filed 2001·Granted Mar 9, 2004·141 cites·6 claims
- 0688US6716549B2Fuel cell having metalized gas diffusion layerAVISTA LAB INC·Filed 2001·Granted Apr 6, 2004·31 cites·13 claims
- 0788US6497974B2Fuel cell power system, method of distributing power, and method of operating a fuel cell power systemAVISTA LAB INC·Filed 2001·Granted Dec 24, 2002·90 cites·38 claims
- 0888US6428918B1Fuel cell power systems, direct current voltage converters, fuel cell power generation methods, power conditioning methods and direct current power conditioning methodsAVISTA LAB INC·Filed 2000·Granted Aug 6, 2002·102 cites·57 claims
- 0983US6703155B2Power tap device, fuel cell stack, and method of dividing a fuel cell stackAVISTA LAB INC·Filed 2001·Granted Mar 9, 2004·25 cites·18 claims
- 1078US6383556B2Method for forming a membrane electrode diffusion assembly for use in an ion exchange membrane fuel cellAVISTA LAB INC·Filed 2001·Granted May 7, 2002·13 cites·21 claims
- 1170US6630259B2Fuel cell power system performing AC inversion, method of distributing AC power, and method of operating a fuel cell power systemAVISTA LAB INC·Filed 2001·Granted Oct 7, 2003·9 cites·51 claims
- 1262US6532792B2Method of compensating a MOS gas sensor, method of manufacturing a MOS gas sensor, MOS gas sensor, and fuel cell systemAVISTA LAB INC·Filed 2001·Granted Mar 18, 2003·4 cites·25 claims
- 1356US6550304B2Method of compensating a MOS gas sensor, method of manufacturing a MOS gas sensor, MOS gas sensor, and fuel cell systemAVISTA LAB INC·Filed 2002·Granted Apr 22, 2003·2 cites·5 claims
- 1451US6467334B2Method for quickly rendering a MOS gas sensor operational, MOS gas sensor system, and fuel cell systemAVISTA LAB INC·Filed 2001·Granted Oct 22, 2002·7 cites·45 claims
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