Chemistry: electrical current producing apparatus – product – and – Having earth feature
Reexamination Certificate
2005-02-02
2008-08-05
Ryan, Patrick (Department: 1795)
Chemistry: electrical current producing apparatus, product, and
Having earth feature
C429S006000, C429S006000
Reexamination Certificate
active
07407723
ABSTRACT:
In a polymer electrolyte fuel cell, at least one of the anode side separator plate and cathode side separator plate is formed with a main surface having a convex shape protruding toward a gas diffusion layer, and a peripheral edge portion surrounding the main surface. An average thickness of the main surface is made to be thicker than an average thickness of the peripheral edge portion. And a difference Δt between the thickest part of the main surface and an average thickness of the peripheral edge portion is made to be 5-30 μm.
REFERENCES:
patent: 7070872 (2006-07-01), Sugiura et al.
patent: 08-045517 (1996-02-01), None
Hatoh Kazuhito
Kawabata Norihiko
Kusakabe Hiroki
Matsumoto Toshihiro
Nagao Yoshiki
Martin Angela
Matsushita Electric - Industrial Co., Ltd.
McDermott Will & Emery LLP
Ryan Patrick
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