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:
Mar. 02, 2010
Filed:
Aug. 28, 2007
Michihiro Hori, Gifu, JP;
Hiroshi Egawa, Gifu, JP;
Hidemi Kado, Gifu, JP;
Tsuyumi Takashiba, Saitama, JP;
Shiro Yagawa, Saitama, JP;
Michihiro Hori, Gifu, JP;
Hiroshi Egawa, Gifu, JP;
Hidemi Kado, Gifu, JP;
Tsuyumi Takashiba, Saitama, JP;
Shiro Yagawa, Saitama, JP;
Honda Motor Co., Ltd., , JP;
Shishiai-Kabushikigaisha, , JP;
Abstract
The present invention relates to a coolant composition for fuel cell coolant, comprised of sulfur containing alcohol or sulfur containing phenol having at least one sulfur atom per molecule, which effectively prevents increase of electric conductivity due to oxidation of its base component for a long time. The coolant composition when diluted with water to a predetermined concentration effectively suppresses increase of electric conductivity of the coolant and maintain fluctuation of electric conductivity within the range from 0 to 10 μS/cm so that power generation efficiency of the fuel cell may not be lowered.