US Patent 7468217 Separator passage structure of fuel cell

Patent 7468217 was granted and assigned to Toyota on December, 2008 by the United States Patent and Trademark Office.

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Is a

Patent

Patent attributes

Current Assignee

Toyota

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

74682170

Patent Inventor Names

Seiji Mizuno0

Date of Patent

December 23, 2008

Patent Application Number

107777260

Date Filed

February 13, 2004

Patent Primary Examiner

‌

Tracy Dove

Patent abstract

A fuel cell according to an embodiment of the invention includes a separator on which a gas passage groove is formed. A cross sectional area of a gas passage changes in a direction in which the gas passage groove extends, while each of an opening width of the gas passage groove and a depth of the gas passage groove remains substantially constant.