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:
Mar. 08, 2005
Filed:
Dec. 20, 2001
Kazuhiko Otawa, Osaka, JP;
Shoji Kato, Sanda, JP;
Katsunori Sugita, Sanda, JP;
Nippon Pilllar Packing Co., Ltd., Osaka, JP;
Toyota Jidosha Kabushiki Kaisha, Aichi-ken, JP;
Abstract
To provide a separator for a fuel cell made of graphite excellent in mechanical strength and gas impermeability as well as electric characteristic properties, a separator for a fuel cell is produced from a molded body produced by filling a graphite powderwhose surface is coated with resinin a molding die and by pressure-molding the powder. Such a molded body is provided with excellent mechanical strength of 40 MPa of bending strength or higher, 10×10cc·cm/cm·sec·atm of gas permeability or lower, and electric property of 10×10Ω·cm of the volume resistance or lower even if the content of resin is decreased to as low as 10 to 24 wt. %.