Fuel cell

US8940449B2 · US · B2

Patent metadata
FieldValue
Publication numberUS-8940449-B2
Application numberUS-16185307-A
CountryUS
Kind codeB2
Filing dateFeb 1, 2007
Priority dateFeb 3, 2006
Publication dateJan 27, 2015
Grant dateJan 27, 2015

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  1. Title

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  2. Abstract

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  3. Assignees and inventors

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  4. Key dates

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  5. First independent claim

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  6. CPC / IPC classifications

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  7. Citations and related patents

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Abstract

Official abstract text for this publication.

A fuel cell including an electrolyte film, a catalyst layer, two diffusion layers, a fuel supply layer, an oxygen supply layer, a water-absorbing layer, and a collector. The fuel cell has an opening at least in a part of a side surface parallel to a proton conduction direction of the electrolyte film among side surfaces of the fuel cell. The water-absorbing layer is present between the oxygen supply layer and the collector. An end portion of the water-absorbing layer is present on one of a plane including the opening and an opposite side of the fuel cell with the plane including the opening being a reference. A fuel cell system having a fuel cell stack including the fuel cells. The fuel cell has a high water discharging ability and is capable of maintaining stable high generation efficiency and providing a high output even while being small-sized and light-weight.

First claim

Opening claim text (preview).

The invention claimed is: 1. A fuel cell comprising: a power generation layer member for moving hydrogen ions from one surface to another surface, and causing the hydrogen ions to react with oxygen on the another surface; an oxygen supply layer having a porosity of at least 80% for diffusing oxygen in an atmosphere taken in from a side surface to supply the oxygen to the another surface; a diffusion layer between the power generation layer member and the oxygen supply layer;…

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What does patent US8940449B2 cover?
A fuel cell including an electrolyte film, a catalyst layer, two diffusion layers, a fuel supply layer, an oxygen supply layer, a water-absorbing layer, and a collector. The fuel cell has an opening at least in a part of a side surface parallel to a proton conduction direction of the electrolyte film among side surfaces of the fuel cell. The water-absorbing layer is present between the oxygen s…
Who is the assignee on this patent?
Yoshizawa Atsuhito, Nagai Kentaro, Canon Kk
What technology area does this patent fall under?
Primary CPC classification H01M8/023. Mapped technology areas include Electricity.
When was this patent published?
Publication date Tue Jan 27 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
What related patents are in patentsdb?
We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).