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:
Oct. 22, 2013
Filed:
Sep. 09, 2011
Hiroshi Yagi, Shinjuku-ku, JP;
Takanori Maeda, Shinjuku-ku, JP;
Yoshinori Oota, Shinjuku-ku, JP;
Yasuhiro Uchida, Shinjuku-ku, JP;
Hiroshi Yagi, Shinjuku-ku, JP;
Takanori Maeda, Shinjuku-ku, JP;
Yoshinori Oota, Shinjuku-ku, JP;
Yasuhiro Uchida, Shinjuku-ku, JP;
Dai Nippon Insatsu Kabushiki Kaisha, Tokyo, JP;
Abstract
In a through hole closing process, a metal plate is attached to one surface of a conductive base member having a plurality of through holes by the use of a magnet, in a copper plating process, a copper plating layer is formed on the conductive base member and the metal plate exposed within the through holes, from the side of the conductive base member where the metal plate is not attached, thereby to fill up the through holes, in a film forming process, a Pd alloy film is formed by plating on the surface of the conductive base member after removal of the metal plate, and in a removal process, the copper plating layer is removed by selective etching, thereby to produce a hydrogen production filter that is used in a reformer a fuel cell so as to be capable of stably producing high purity hydrogen gas.