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:
Sep. 03, 2013
Filed:
May. 27, 2010
Kazuhiro Yamamoto, Minato-ku, JP;
Kazuhiro Yamamoto, Minato-ku, JP;
Tokai Carbon Co., Ltd., Tokyo, JP;
Abstract
A method of producing a fuel cell separator includes pressing a compact part-forming material that includes a carbonaceous powder and a thermosetting resin binder at a temperature equal to or higher than the softening temperature of the thermosetting resin binder and less than the curing temperature of the thermosetting resin binder to obtain a compact part-forming preformed sheet, preparing a porous part-forming powder that includes a carbonaceous powder and a thermosetting resin binder, placing the compact part-forming preformed sheet and the porous part-forming powder in a forming die that has a concave-convex forming surface corresponding to the shape of a gas passage so that the concave-convex forming surface faces the porous part-forming powder, and hot-pressing the compact part-forming preformed sheet and the porous part-forming powder using the forming die at a temperature equal to or higher than the curing temperature of the thermosetting resin binder included in the compact part-forming material or the curing temperature of the thermosetting resin binder included in the porous part-forming powder, whichever is the higher.