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:
Nov. 13, 2012
Filed:
Aug. 03, 2004
Taishi Maeda, Takasaki, JP;
Taishi Maeda, Takasaki, JP;
SANYO Electric Co., Ltd., Moriguchi-shi, Osaka, JP;
Abstract
A cylindrical alkaline storage battery has a cylindrical case which contains an electrode assembly and an alkaline electrolyte. The assembly is formed by spirally winding a negative plate, a positive plate and a separator. The negative plate has a substrate having through holes and an active material layer which is disposed on the substrate and has an inner layer, an outer layer and a filler filled in the through holes. Each of the inner layer and outer layers has an overlapping portion which overlaps the adjacent positive plate via the separator. The filler has filling portions distributed in an area of the substrate that is covered by the overlapping portion of the inner and outer layers. The total amount of the active material contained in the overlapping portions and the filling portions ranges from 75% of the total amount of the active material in the negative plate to 100%.