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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 4567086 B1

PDFFull Text
Date of Patent:
Jan. 28, 1986

Filed:

Apr. 01, 1985

Carbonaceous, five-layer fuel cell electrode substrate with elongated

Applicant:
Inventors:

Hiroyuki Fukuda, Iwaki, JP;

Masatomo Shigeta, Iwaki, JP;

Hisatsugu Kaji, Iwaki, JP;

Kuniyuki Saitoh, Abiko, JP;

Assignee:

Kureha Kagaku Kogyo Kabushiki Kaisha, Tokyo, JP;

Attorney:

Cushman, Darby & Cushman

Primary Examiner:

William J Van Balen

Int. Cl.
CPC ...
B32B / ; B32B / ;
U.S. Cl.
CPC ...
428166 ; 428167 ; 428172 ; 428218 ; 4283122 ; 4283166 ; 428408 ;
Abstract

Disclosed herein is an electrode substrate for fuel cells which has an integratedly press molded five-layer structure comprising a porous carbonaceous layer, a dense carbonaceous layer having a bulk density larger than the porous layer, a separator, a dense carbonaceous layer having a bulk density larger than the porous layer, and a porous carbonaceous layer, and which further comprises a number of elongated holes for feeding reactant gases into a fuel cell in the interface between the porous layer and the dense layer. The processes for preparing the electrode substrates are also provided according to the present invention.

Find Patent Forward Citations

Fukuda, Hiroyuki. (1986). Carbonaceous, five-layer fuel cell electrode substrate with elongated (U.S. Patent No. 4567086). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4567086

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