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:
Feb. 22, 2011
Filed:
Dec. 27, 2006
Yoshihiko Nakano, Yokohama, JP;
Hideo Ohta, Minato-ku, JP;
Kazuhiro Yasuda, Yokohama, JP;
Jun Tamura, Yokohama, JP;
Yoshihiko Nakano, Yokohama, JP;
Hideo Ohta, Minato-ku, JP;
Kazuhiro Yasuda, Yokohama, JP;
Jun Tamura, Yokohama, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
An electrolytic membrane comprising a porous membrane substrate containing a cross-linked polymer electrolyte having at least a structural component shown by following chemical formula 1: wherein A represents a repeating unit having an aromatic hydrocarbon group substituted by at least a sulfonic acid group, B represents a repeating unit having one of a nitrogen-containing hetero ring compound residue, and the sulfate, hydrochloride or organic sulfonate thereof, C represents a repeating unit having a cross-linked group, and X, Y and Z represent mol fractions of respective repeating units in the chemical formula 1, with 0.34≦X≦0.985, 0.005≦Y≦0.49, 0.01≦Z≦0.495 and Y≦X and Z≦X, provided that, in the repeating unit A, a ratio of the aromatic hydrocarbon group substituted by at least a sulfonic acid group is 0.3 to 1.0, and the number of the sulfonic acid group in the aromatic hydrocarbon group is 1 to 3.