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:
Dec. 22, 2009
Filed:
Oct. 27, 2004
Applicants:
Takayuki Funato, Kyoto, JP;
Junpei Yamashita, Kyoto, JP;
Inventors:
Takayuki Funato, Kyoto, JP;
Junpei Yamashita, Kyoto, JP;
Assignee:
GS Yuasa Corporation, Kyoto, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01M 6/04 (2006.01); H01M 2/16 (2006.01);
U.S. Cl.
CPC ...
Abstract
A lead-acid battery which comprises a positive electrode, a negative electrode, a separator and an electrolyte, wherein the electrolyte contains volatile organic acid and the content of volatile organic acid is 250 mg or lower per liter of the electrolyte. The present invention can improve the performance of the lead-acid battery.