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:
Sep. 21, 1999
Filed:
Sep. 23, 1997
Applicant:
Inventors:
Yasuko Hoshina, Hirakata, JP;
Yohei Hattori, Fujisawa, JP;
Noboru Ito, Toyohashi, JP;
Nobuyasu Morishita, Toyohashi, JP;
Munehisa Ikoma, Toyohashi, JP;
Assignee:
Matsushita Electric Industrial Co., Ltd., Osaka-Fu, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M / ;
U.S. Cl.
CPC ...
429144 ; 429206 ; 429247 ;
Abstract
A sealed alkaline storage battery of the present invention employs a non-woven fabric having a double-layer structure of a dense and sparse layers as a separator to separate a positive electrode from a negative electrode, the sparse layer facing the negative electrode and being lower than the dense layer in fiber density.