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:
May. 22, 2012
Filed:
Sep. 17, 2008
Masahiro Seido, Tsuchiura, JP;
Kazuhiko Nakagawa, Tsuchiura, JP;
Takaaki Sasaoka, Tsuchiura, JP;
Mineo Washima, Tsuchiura, JP;
Masahiro Seido, Tsuchiura, JP;
Kazuhiko Nakagawa, Tsuchiura, JP;
Takaaki Sasaoka, Tsuchiura, JP;
Mineo Washima, Tsuchiura, JP;
Hitachi Cable, Ltd., Tokyo, JP;
Abstract
A metal separator for fuel cells formed with a metal plate and provided between cells accumulated, in which the metal plate is formed like trapezoidal irregularities to separate channels for a fuel gas from ones for an oxidant gas. Slope portions are formed after forming uniformly and thinly wall thickness of both upper and lower flat portions or either of the upper or the lower flat portion to 90% or less of that of the metal plate to be formed to obtain trapezoidal irregularities by forming flat portions which contact upper and lower cells and slope portions which interconnect the upper and the lower flat portions.