Chemistry: electrical current producing apparatus – product – and – Having earth feature
Reexamination Certificate
2006-08-29
2006-08-29
Yuan, Dah-Wei (Department: 1745)
Chemistry: electrical current producing apparatus, product, and
Having earth feature
C429S047000, C429S047000
Reexamination Certificate
active
07097932
ABSTRACT:
A polymer electrolyte fuel cell is provided comprising: a hydrogen ion conductive polymer electrolyte membrane; an anode and a cathode sandwiching the hydrogen ion conductive polymer electrolyte membrane; an anode side electroconductive separator having a gas channel for supplying a fuel gas to the anode; a cathode side electroconductive separator having a gas channel for supplying an oxidant gas to the cathode; characterized in that the anode and the cathode comprise a gas diffusion layer and a catalyst layer formed on the gas diffusion layer at the side in contact with the hydrogen ion conductive polymer electrolyte membrane, the catalyst layer has catalyst particles and a hydrogen ion conductive polymer electrolyte, and at least either of hydrogen ion conductivity and gas permeability of at least either of the anode and the cathode varies in a thickness direction of the anode or the cathode.
REFERENCES:
patent: 4444852 (1984-04-01), Liu et al.
patent: 5211984 (1993-05-01), Wilson
patent: 5318862 (1994-06-01), Liu et al.
patent: 5501915 (1996-03-01), Hards et al.
patent: 5523177 (1996-06-01), Kosek et al.
patent: 5843519 (1998-12-01), Tada et al.
patent: 5874182 (1999-02-01), Wilkinson et al.
patent: 5882810 (1999-03-01), Mussell et al.
patent: 88 122 (1970-07-01), None
patent: 88122 (1972-11-01), None
patent: 196 47 534 (1998-05-01), None
patent: 0 687 023 (1995-12-01), None
patent: 0 972 807 (1998-10-01), None
patent: 0 928 038 (1999-07-01), None
patent: 61-295387 (1986-12-01), None
patent: 3-130150 (1991-12-01), None
patent: 5-36418 (1993-02-01), None
patent: 5-182671 (1993-07-01), None
patent: 7-183035 (1995-07-01), None
patent: 08-088008 (1996-04-01), None
patent: 8-96813 (1996-04-01), None
patent: 9-245801 (1997-09-01), None
patent: 09-245801 (1997-09-01), None
patent: 9-245802 (1997-09-01), None
patent: 10-92440 (1998-04-01), None
patent: 10-189004 (1998-07-01), None
patent: 10270051 (1998-09-01), None
patent: WO 99/40237 (1999-08-01), None
Gyoten Hisaaki
Kanbara Teruhisa
Kusakabe Hiroki
Morita Junji
Sakai Osamu
Matsushita Electric - Industrial Co., Ltd.
McDermott Will & Emery LLP
Yuan Dah-Wei
LandOfFree
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