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. 23, 2005
Filed:
Nov. 06, 2002
Applicants:
Naoto Sato, Kosai, JP;
Katsunori Komori, Toyohashi, JP;
Nobuyasu Morishita, Toyohashi, JP;
Inventors:
Assignees:
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Toyota Jidosha Kabushiki Kaisha, Aichi, JP;
Primary Examiner:
Int. Cl.
CPC ...
H01M002/16 ;
U.S. Cl.
CPC ...
Abstract
A separator for an alkaline storage battery includes a plurality of polyolefin resins. The polyolefin resins include a first polyolefin resin that is sulfonated, and a second polyolefin resin that is sulfonated. The degree of sulfonation of the first polyolefin resin is different from that of the second polyolefin resin. Thus, a novel separator having high liquid retention properties and high air permeability, and an alkaline storage battery using the same can be obtained.