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:
Oct. 18, 2011
Filed:
Jul. 25, 2007
Applicants:
Mitsuji Adachi, Osaka, JP;
Masatoshi Hano, Osaka, JP;
Inventors:
Mitsuji Adachi, Osaka, JP;
Masatoshi Hano, Osaka, JP;
Assignee:
Panasonic Corporation, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M 2/00 (2006.01); H01M 10/26 (2006.01);
U.S. Cl.
CPC ...
Abstract
An electrochemical device, such as an alkaline battery, that is excellent in leakage-resistance and storage characteristics is provided by controlling at least one of the following two conditions with respect to at least the inner side surface of a battery case comprising a nickel plated steel plate. The two conditions are: (1) the intensity ratio of Fe to Ni (I) as determined by electron probe microanalysis; and (2) the ratio of the area with an intensity ratio of Fe to Ni (I) of greater than 1.0 as determined by electron probe microanalysis to the whole area.