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:
Jul. 15, 2003
Filed:
Oct. 27, 1998
Applicant:
Inventors:
Yasuyuki Yoshihara, Aichi, JP;
Yoshihiro Murata, Shizuoka, JP;
Takashi Hattori, Aichi, JP;
Akira Inanobe, Aichi, JP;
Assignee:
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01M 4/74 ; H01M 6/04 ; H01M 4/64 ; H01M 4/72 ; H01M 2/16 ;
U.S. Cl.
CPC ...
H01M 4/74 ; H01M 6/04 ; H01M 4/64 ; H01M 4/72 ; H01M 2/16 ;
Abstract
A storage battery including an electrode and an electrolyte material, in which the electrode has a grid with a mesh area of about 50 mm or less and an active material provided on the grid. Accordingly, it is made possible to prevent a decrease in the negative electrode's conductivity due to a contraction of the negative electrode active material that takes place extensively when a cycle of charge and discharge is repeated particularly at high temperatures with a resulting remarkable improvement in cycle life characteristics of a lead-acid storage battery.