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. 25, 2017
Filed:
Jul. 21, 2010
Yukio Harima, Osaka, JP;
Koji Funami, Kyoto, JP;
Seiji Kumazawa, Osaka, JP;
Kyosuke Miyata, Osaka, JP;
Takahiro Fukuoka, Osaka, JP;
Seiichi Kato, Osaka, JP;
Yukio Harima, Osaka, JP;
Koji Funami, Kyoto, JP;
Seiji Kumazawa, Osaka, JP;
Kyosuke Miyata, Osaka, JP;
Takahiro Fukuoka, Osaka, JP;
Seiichi Kato, Osaka, JP;
Abstract
A sealed battery including: an electrode groupformed by winding or stacking a positive electrode plateand a negative electrode platewith a separatorinterposed between the positive electrode plateand the negative electrode plate, and housed in a battery case, an opening of the battery casebeing sealed with a sealing plate, wherein a leadextending from one of the electrode plates in the electrode groupis laser-welded to the sealing plate, and a melting width of an end sectionof a welded portionbetween the leadand the sealing plateis smaller than a melting width of a center section of the welded portion