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:
May. 29, 2012
Filed:
Aug. 31, 2009
Susumu Kato, Osaka, JP;
Susumu Kato, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
The present invention provides an alkaline battery which has high reliability and high cost performance and does not cause an internal short circuit resulting from gel leakage even when the filling densities of the positive and negative electrodes are reduced. In the alkaline battery, a positive electrodecontains manganese dioxide as a positive electrode active material, a negative electrodeis a gel negative electrode containing zinc as a negative electrode active material, a filling density of manganese dioxide in the positive electrodeis in a range of 2.31 to 2.45 g/cm, a filling density of zinc in the negative electrodeis in a range of 1.49 to 1.65 g/cm, and a ratio (h/h) between a height of the positive electrode(h) and a height of the negative electrode(h) is in a range of 0.96 to 1.06.