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Harvard Business School

Generated: November 18, 2017

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Details for Patent: 5,549,982

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Summary for Patent: 5,549,982

Title: Fuel cell
Abstract:In a fuel cell, a plurality of cells juxtaposed side by side to constitute together a cell layer and a plurality of cell layers thus prepared are stacked one above another to constitute together a multi-layered fuel cell assembly, In each cell layer, adjacent cells are interconnected and supported via a cell connecting plate member. This connecting plate member includes a cutout extending from one edge to the other opposite edge of the member along the entire length thereof for allowing insertion of opposed opened sides of the adjacent cells to which the inner cell flow passages are opened. The cutout has a depth substantially same as the thickness of the cell. An abutment face is defined in each end face of a pair of partition wall portions adjacent the cutout and a corresponding abutment face is defined in each closed side of the cell adjacent the opened side. As the cutout is partitioned by the opposed partition wall portions of the cutout and by a further adjacent cell connecting plate member, there is formed a connecting flow passage which interconnects the inner cell passages of the adjacent cells of the layer and which is partitioned from an inter-cell flow passage formed between the cells adjacently stacked in the assembly.
Inventor(s): Akagi; Kosuke (Ikoma, JP)
Assignee: Osaka Gas Co., Ltd. (JP)
Application Number:08/537,136
Patent Claim Types:
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Foreign Priority and PCT Information for Patent: 5,549,982

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
Japan6-238968Oct 03, 1994
Japan7-134898Jun 01, 1995

International Patent Family for Patent: 5,549,982

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
European Patent Office0706229► Subscribe
Germany69503014► Subscribe
JapanH08162141► Subscribe
Japan3007814► Subscribe
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The estimated expiration dates shown above are derived by simply adding 20 years to the priority date.
Due to the complexity of determining patent expirations even in a single country, compounded by the diversity of global patent laws, it is advisable to have patent counsel verify freedom to operate.

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Serving leading biopharmaceutical companies globally:

Johnson and Johnson
Daiichi Sankyo
Chinese Patent Office
Cantor Fitzgerald
US Department of Justice

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