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.:
Date of Patent:
Aug. 11, 1987
Filed:
Oct. 04, 1985
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:
Primary Examiner:
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.