US Patent No: 6,686,082

Number of patents in Portfolio can not be more than 2000

Fuel cell stack

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A fuel cell stack comprises fuel cell basic units, each of which including a gas diffuser/collector plate serving as an anode, an ion exchange membrane, disposed on top of the gas diffuser/collector plate and an air diffuser/collector plate serving as a cathode and disposed on top of the ion exchange membrane. The gas diffuser/collector has a face directed to the ion exchange membrane. This face is provided with a flow field incorporating a multiplicity of adjacent open-faced flow channels. Each open-faced flow channel has a cross-section continuously diminishing from its inlet to its outlet. The flow field, viewed from the top, forms a trapezoidal contour.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
POWERDISC DEVELOPMENT CORP. LTD.CHILLIWACK BC2

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Black, Shane Carver Chilliwack, CA 3 18
Leger, David Earl Chilliwack, CA 7 40
Mc, Donald Mark Chesley Cultus Lake, CA 2 13

Cited Art Landscape

Patent Info (Count) # Cites Year
 
DAIMLER AG (1)
5,804,326 Integrated reactant and coolant fluid flow field layer for an electrochemical fuel cell 36 1996
 
Honda Giken Kogyo Kabushiki Kaisha (1)
6,048,633 Fuel cell stack 35 1998
 
PLUG POWER INC. (1)
5,981,098 Fluid flow plate for decreased density of fuel cell assembly 68 1997
 
NIPPON PILLAR PACKING CO., LTD. (1)
* 6,468,685 Separator for a fuel cell 10 2000
 
SIEMENS AKTIENGESELLSCHAFT (1)
6,080,502 Fluid-cooled fuel cell with distribution ducts 24 1998
 
HUMBOLDT STATE UNIVERSITY FOUNDATION (1)
* 5,879,826 Proton exchange membrane fuel cell 37 1996
 
HYBRID POWER GENERATION SYSTEMS, LLC (1)
* 5,686,199 Flow field plate for use in a proton exchange membrane fuel cell 53 1996
 
GM GLOBAL TECHNOLOGY OPERATIONS LLC (1)
6,099,984 Mirrored serpentine flow channels for fuel cell 70 1998
* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
ZONGSHEN PEM POWER SYSTEMS INC. (2)
* 7,261,966 Apparatus and method for conducting fluid in a fuel cell and fuel cell employing same 1 2003
* 2004/0265,672 Apparatus and method for conducting fluid in a fuel cell and fuel cell employing same 4 2003
 
HONDA MOTOR CO., LTD. (2)
* 7,517,602 Fuel cell and fuel cell stack 0 2004
* 2005/0142,425 Fuel cell can fuel cell stack 3 2004
 
KIMBERLY-CLARK WORLDWIDE, INC. (1)
* 2009/0203,772 Vaginal Health Products 9 2009
 
HYTEON INC. (9)
7,531,264 Fuel cell stack with even distributing gas manifolds 2 2004
7,524,575 Flow field plate for use in fuel cells 1 2004
* 2005/0271,909 Flow field plate for use in fuel cells 10 2004
* 2005/0271,910 Fuel cell stack with even distributing gas manifolds 5 2004
* 2006/0008,695 Fuel cell with in-cell humidification 6 2004
7,314,680 Integrated fuel cell power module 3 2004
* 2006/0068,250 Integrated fuel cell power module 2 2004
7,479,333 Fuel cell stack with multiple groups of cells and flow passes 1 2004
* 2006/0127,709 Fuel cell stack with multiple groups of cells and flow passes 3 2004
 
POWERDISC DEVELOPMENT CORP. LTD. (1)
7,838,169 Fuel cell cathode flow field 0 2005
 
MORGAN CRUCIBLE COMPANY PLC, THE (5)
7,067,213 Flow field plate geometries 8 2002
* 2004/0023,100 Flow field plate geometries 3 2003
7,838,139 Flow field plate geometries 1 2003
* 2007/0105,000 Flow field plate geometries 9 2004
* 2005/0221,152 Flow field plate geometries 1 2004
* Cited By Examiner