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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 4686072 B1

PDFFull Text
Date of Patent:
Aug. 11, 1987

Filed:

Oct. 04, 1985

Process for preparing a carbonaceous five-layer fuel cell electrode

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:

Jeffery Thurlow

Int. Cl.
CPC ...
H01M / ;
U.S. Cl.
CPC ...
264 295 ; 264 296 ; 264 297 ; 264105 ; 264255 ; 264320 ; 264324 ; 4234477 ; 429 34 ; 429 44 ;
Abstract

Disclosed herein are processes for preparing 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.

Find Patent Forward Citations

Fukuda, Hiroyuki. (1987). Process for preparing a carbonaceous five-layer fuel cell electrode (U.S. Patent No. 4686072). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4686072

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