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. 03, 2006
Filed:
Dec. 05, 2003
Hidekazu Kimura, Minato-ku, JP;
Suguru Watanabe, Minato-ku, JP;
Tsutomu Yoshitake, Minato-ku, JP;
Sadanori Kuroshima, Minato-ku, JP;
Shin Nakamura, Minato-ku, JP;
Yuichi Shimakawa, Minato-ku, JP;
Takashi Manako, Minato-ku, JP;
Hideto Imai, Minato-ku, JP;
Yoshimi Kubo, Minato-ku, JP;
Hidekazu Kimura, Minato-ku, JP;
Suguru Watanabe, Minato-ku, JP;
Tsutomu Yoshitake, Minato-ku, JP;
Sadanori Kuroshima, Minato-ku, JP;
Shin Nakamura, Minato-ku, JP;
Yuichi Shimakawa, Minato-ku, JP;
Takashi Manako, Minato-ku, JP;
Hideto Imai, Minato-ku, JP;
Yoshimi Kubo, Minato-ku, JP;
NEC Corporation, Tokyo, JP;
Abstract
A plurality of fuel electrodes are disposed on one surface of a solid polyelectrolyte membrane, while a plurality of oxidizer electrodes are disposed on the other surface of the same to create a plurality of unit cells which share the solid polyelectrolyte membrane. These unit cells are electrically connected through connection electrode extending through the solid polyelectrolyte membrane. A groove is formed in a region of the solid polyelectrolyte membrane between adjacent unit cells. This groove limits the migration of hydrogen ions to adjacent unit cells to prevent a reduction in voltage. The resulting solid polymer fuel cell, which is in a simple structure and reduced in size, can provide high power.