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. 29, 2012
Filed:
Nov. 07, 2005
Masahiro Yamashita, Otsu, JP;
Kota Kitamura, Otsu, JP;
Yoshimitsu Sakaguchi, Otsu, JP;
Toyo Boseki Kabushiki Kaisha, Osaka-Shi, JP;
Abstract
A proton-conducting polymer composition which contains an aromatic hydrocarbon type of proton-conducting polymer in an amount of 1 to 30 mass %, wherein a component of said proton-conducting polymer having a molecular weight in the range of 2,000 to 230,000 in terms of polyethylene glycol accounts for 10 mass % or more of the total amount of said proton-conducting polymer; a method for preparing the proton-conducting polymer composition, a catalyst ink comprising the proton-conducting polymer composition and a fuel cell including the catalyst ink. The above proton-conducting polymer composition can well exploit the performance capability of a catalyst of a fuel cell, especially when it is allowed to be present with the electrode of a fuel cell.