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:
Apr. 28, 2009
Filed:
Jul. 05, 2002
Applicants:
Yoshiki Somatomo, Kyoto, JP;
Osamu Watanabe, Toyonaka, JP;
Masatoshi Tanaka, Toride, JP;
Inventors:
Assignee:
Hitachi Maxell, Ltd., Ibaraki-Shi, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01M 2/08 (2006.01); H01M 2/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
A battery canis composed of a can bodyhaving a concave portionfor accommodating an electrode body, and a metal coverfor sealing an opening end of the concave portionof the can body. The can bodyis formed in a plate shape by subjecting a metal plate to shallow drawing. A flangeis provided at a peripheral edge portion of the opening end of the can body, which is bonded to be integrated with the metal coverto keep an air-tight and liquid-tight state in the concave portion