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:
Jun. 17, 2003
Filed:
Oct. 28, 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 4/64 ; H01M 4/72 ; H01M 1/034 ; H01M 1/052 ; H01M 6/04 ;
U.S. Cl.
CPC ...
H01M 4/64 ; H01M 4/72 ; H01M 1/034 ; H01M 1/052 ; H01M 6/04 ;
Abstract
A lead-acid storage battery includes a positive electrode, a negative electrode and an electrolyte material. The foregoing negative electrode has a first grid with a first grid geometry and a first active material provided on the above first grid. The foregoing positive electrode has a second grid with a second grid geometry and a second active material provided on the above second grid. A first mesh area of the foregoing first grid is smaller than a second mesh area of the foregoing second grid, thereby achieving an excellent high rate discharge cycle life.