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:
Sep. 12, 2000
Filed:
Mar. 24, 1998
Hisaaki Gyoten, Shijonawate, JP;
Takaharu Gamou, Fujiidera, JP;
Kazuhito Hatoh, Daitou, JP;
Eiichi Yasumoto, Katano, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
The present invention is for facilitating a removal of water around the catalytic layers of a polymer electrolyte fuel cell and for providing a polymer electrolyte fuel cell which can prevent from drop in output performance caused by excessive wetting of electrode layers due to a long-hour operation or a large current ouputting operation. The polymer electrolyte fuel cell according to the present invention uses an electrode layer having a water repellent porous base area and penetration areas which are higher in water permeability than in the base area. Such base area and penetration areas are formed as by imparting water repellency unevenly on a hydrophilic pore material, for example.