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:
Jan. 24, 2012
Filed:
Mar. 14, 2008
Motomichi Kanbe, Osaka, JP;
Kunihiko Ushio, Osaka, JP;
Takeo Yazawa, Osaka, JP;
Hideaki Yamamoto, Osaka, JP;
Yoshio Tarutani, Osaka, JP;
Akira Seki, Osaka, JP;
Motomichi Kanbe, Osaka, JP;
Kunihiko Ushio, Osaka, JP;
Takeo Yazawa, Osaka, JP;
Hideaki Yamamoto, Osaka, JP;
Yoshio Tarutani, Osaka, JP;
Akira Seki, Osaka, JP;
Sumitomo Metal Industries, Ltd., Osaka, JP;
Abstract
A method for producing a stainless steel three-ply clad sheet for a fuel cell separator comprises heating a source blank and then performing rough rolling, hot rolling and cold rolling thereto, whereby the clad steel sheet for the fuel cell separator or a solid polymer type fuel cell separator thereby is obtained. The source blank for the clad steel sheet is composed of a stainless steel utilizing 0 to 0.3% B as a core component and a stainless steel containing 0.3 to 2.5% B as face component. The source blank is made using face components, a core component, tabs and protectors and performing steps including bonding of the tabs and protectors to the face components, removing portions of the tabs and protectors, piling of the face components to the core component, and further bonding of the face and core components together to form the source blank.