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:
Apr. 25, 2006
Filed:
Nov. 20, 2002
Naoto Sato, Kosai, JP;
Nobuyasu Norishita, Toyohashi, JP;
Naoto Sato, Kosai, JP;
Nobuyasu Norishita, Toyohashi, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Toyota Jidosha Kabushiki Kaisha, Aichi, JP;
Abstract
An alkaline storage battery comprises: a positive electrode plate; a negative electrode plate; a separator; and an alkaline electrolyte retained by the positive electrode plate, the negative electrode plate, and the separator, wherein the separator has a large number of pores, such that a total volume A of the pores (per unit mass; cm/g) is in the range of 1≦A≦5, and the ratio of the volume B of pores having a diameter of 100 μm or more (per unit mass; cm/g) to the total pore volume A is in the range of 7%≦B/A≦20% (i.e., B/A is between 0.07 and 0.2).