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:
Oct. 02, 2012
Filed:
Mar. 17, 2005
Shin Ishikawa, Chiba, JP;
Yasushi Kato, Chiba, JP;
Osamu Furukimi, Chiba, JP;
JFE Steel Corporation, , JP;
Abstract
A metallic material for a conductive member has good corrosion resistance and low contact resistance. The metallic material has 0.3 μm or less of mean spacing of local peaks of the surface roughness profile. A proton-exchange membrane fuel cell includes a proton-exchange membrane, an electrode, a gas diffusing layer, and a separator using the metallic material for a conductive member, where the metallic material for a conductive member includes a stainless steel and includes 0.03% or less C, 0.03% or less N, 16 to 45% Cr, 0.1 to 5.0% Mo, 0.03% or less (C+N), by mass, and balance of Fe and inevitable impurities, and where the metallic material for a conductive member has 0.3 μm or less of mean spacing of local peaks of the surface roughness profile.