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:
Jul. 08, 2008
Filed:
Jan. 29, 2004
Haruo Sawa, Kochi-ken, JP;
Haruo Sawa, Kochi-ken, JP;
Nippon Kodoshi Corporation, Kochi-ken, JP;
Abstract
It is an object to provide a solid electrolyte and an electrochemical system using the solid electrolyte which has a little expansion (swelling) and whose strength does not decrease in case of positioning the solid electrolyte including a complex compound composed of an inorganic compound, polyvinyl alcohol, and water, in a wet condition. It is possible to use the solid electrolyte in a device such as a fuel cell or an electrolytic device used with the wet condition. The solid electrolyte has a little size variation even if humidity varies and has a low methanol permeability. The solid electrolyte is produced by replacing a part or all of hydroxyl groups of polyvinyl alcohol domain to groups each of which has a water absorption less than that of said hydroxyl group, in the solid electrolyte including a complex compound which is composed of polyvinyl alcohol, water, and at least one inorganic compound selected from silicic acid compound, tungstic acid compound, molybdic acid compound, stannic acid compound, and zirconic acid compound.