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. 31, 2015
Filed:
Dec. 24, 2010
Takashi Iseki, Aichi-gun, JP;
Kazuyuki Nakanishi, Seto-shi, JP;
Yasuhiro Ozawa, Aichi-gun, JP;
Yuka Yamada, Toyota, JP;
Hajime Hasegawa, Toyota, JP;
Masafumi Koizumi, Toyota, JP;
Katsutoshi Fujisawa, Toyota, JP;
Naoki Ueda, Toyota, JP;
Hirohiko Hisano, Toyota, JP;
Takashi Iseki, Aichi-gun, JP;
Kazuyuki Nakanishi, Seto-shi, JP;
Yasuhiro Ozawa, Aichi-gun, JP;
Yuka Yamada, Toyota, JP;
Hajime Hasegawa, Toyota, JP;
Masafumi Koizumi, Toyota, JP;
Katsutoshi Fujisawa, Toyota, JP;
Naoki Ueda, Toyota, JP;
Hirohiko Hisano, Toyota, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-Shi, JP;
Abstract
A bipolar plate for a fuel cell comprises a substrate formed of stainless steel; an oriented amorphous carbon film formed at least on a surface of the substrate facing an electrode, and containing C as a main component, 3 to 20 at. % of N, and more than 0 at. % and not more than 20 at. % of H, and when the total amount of the C is taken as 100 at. %, the amount of C having an sphybrid orbital (Csp) being not less than 70 at. % and less than 100 at. %, and (002) planes of graphite being oriented along a thickness direction; a mixed layer generated in an interface between the substrate and the oriented amorphous carbon film and containing at least one kind of constituent atoms of each of the substrate and the oriented amorphous carbon film; and a plurality of projections protruding from the mixed layer into the oriented amorphous carbon film and having a mean length of 10 to 150 nm.