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:
Aug. 24, 2010
Filed:
Jun. 16, 2005
Yoshiyo Kubo, Kochi-ken, JP;
Yoshitada Hayashi, Kochi-ken, JP;
Masahiko Ueta, Kochi-ken, JP;
Nippon Kodoshi Corporation, Kochi-ken, JP;
Abstract
A thin separator paper is provided for separating a positive electrode active material and a negative electrode active material from one another in alkaline battery. The separator paper has high gas tightness, high shortage preventing effect, and low deterioration. The separator paper possesses a crystalline structure in which celluloseand cellulosecoexist. A ratio of the celluloseis controlled in relation to the celluloseand the separator paper is made by using an alkali treated pulp beaten from CSF 50 ml to 0 ml, as a raw material. The separator paper has the thickness between 15 μm and 60 μm, the gas tightness between 10 minutes/100 ml and 800 minutes/100 ml, and the area shrinkage rate which is not greater than 2%. Also provided is an alkaline battery containing the separator paper.