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:
Nov. 13, 2012
Filed:
Aug. 31, 2004
Akihiro Miyauchi, Hitachi, JP;
Kenichi Souma, Mito, JP;
Shuichi Suzuki, Hitachi, JP;
Yoshiyuki Takamori, Hitachinaka, JP;
Masahiko Ogino, Hitachi, JP;
Takashi Ando, Hitachi, JP;
Hidetoshi Honbo, Hitachinaka, JP;
Akihiro Miyauchi, Hitachi, JP;
Kenichi Souma, Mito, JP;
Shuichi Suzuki, Hitachi, JP;
Yoshiyuki Takamori, Hitachinaka, JP;
Masahiko Ogino, Hitachi, JP;
Takashi Ando, Hitachi, JP;
Hidetoshi Honbo, Hitachinaka, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
The present invention provides an electrolyte membrane for a fuel cell that has a minute projection cluster on one side or both sides of a polymer electrolyte membrane. Further, the present invention provides a production method of an electrolyte membrane for a fuel cell, wherein a mold comprising convex portions having a fixed planar pattern is pressed on one side or both sides of a polymer electrolyte membrane, then while concave portions of the polymer electrolyte membrane formed in the concave portions are being stretched, the mold is removed from the polymer electrolyte membrane for forming a minute projection cluster.