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:
Dec. 10, 2002
Filed:
Nov. 30, 1999
Mitsuo Karakane, Oura-Gun, JP;
Takashi Yasuo, Hirakata, JP;
Shigeru Sakamoto, Oota, JP;
Yasunori Yoshimoto, Oura-Gun, JP;
Yasuo Miyake, Oura-Gun, JP;
Ikuo Yonezu, Hirakata, JP;
Koji Nishio, Hirakata, JP;
Sanyo Electric Co., Ltd., Moriguchi, JP;
Abstract
A water-retaining layer is formed to coat the top of ribs of a ribbed plate which is to be disposed, as a component of a polymer electrolyte fuel cell, on at least one surface of a cell which includes an electrolyte membrane and two electrodes disposed on two surfaces of the electrolyte membrane. The water-retaining layer is formed by: generating a mixture by dissolving a resin-carbon mixture into a solvent; applying the mixture using a spray to a surface of the ribbed plate having the ribs; and drying the applied mixture at a certain temperature. The ability to retain water in the water-retaining layer per unit active area of the electrodes is desirably in the range of 0.002 to 0.035 g/cm , and more desirably, in the range of 0.01 to 0.03 g/cm .