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. 28, 2012
Filed:
Sep. 27, 2007
Tadashi Iino, Kawasaki, JP;
Zenichiro Izumi, Kawasaki, JP;
Yukihito Tanaka, Wako, JP;
Toshiki Kawamura, Wako, JP;
Tadashi Iino, Kawasaki, JP;
Zenichiro Izumi, Kawasaki, JP;
Yukihito Tanaka, Wako, JP;
Toshiki Kawamura, Wako, JP;
Showa Denko K.K., Tokyo, JP;
Honda Motor Co., Ltd., Tokyo, JP;
Abstract
A high-performance separator for a fuel cell is provided that includes an electrically conducting flow path part and an integrated insulating outer circumferential part surrounding the flow path part. The flow path part includes an electrically conducting resin composition including a carbonaceous material (A) and a thermoplastic resin composition (B) at a mass ratio (A)/(B) of 1 to 20 with the total mass of (A) and (B) accounting for 80 to 100 mass % in the composition. The flow path part has a corrugated shape having a recess and a projection on each of front and back surfaces thereof, where the recess constitutes a groove for a flow path, and a thickness of 0.05 to 0.5 mm and a maximum thickness/minimum thickness ratio of 1 to 3. The insulating outer circumferential part includes an insulating thermoplastic resin composition having a volume resistivity of 10Ωcm or more.