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:
Jan. 02, 2007
Filed:
Nov. 25, 2003
Takashi Komura, Wako, JP;
Yoichi Asano, Wako, JP;
Masahiro Ise, Wako, JP;
Ryoichiro Takahashi, Wako, JP;
Hiromichi Yoshida, Wako, JP;
Takashi Komura, Wako, JP;
Yoichi Asano, Wako, JP;
Masahiro Ise, Wako, JP;
Ryoichiro Takahashi, Wako, JP;
Hiromichi Yoshida, Wako, JP;
Honda Motor Co., Ltd., Tokyo, JP;
Abstract
A solid polymer electrolyte membrane fuel cell electrode catalyst layer comprises Pt particles carried on a carbon carrier and a solid polymer electrolyte, wherein a center-to-center distance dimension (Lpt−pt) between the Pt particles carried on the carbon carrier is made to substantially coincide with the sum of a double of a total dimension resulting by adding the length (Lpes) of a side chain having an ion-exchange group to the diameter (Dpem) of a main chain of the solid polymer electrolyte and the diameter (Dpt) of the Pt particle.