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:
Aug. 21, 2012
Filed:
Dec. 10, 2008
Takashi Mushiga, Osaka, JP;
Takashi Mushiga, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
An opening part of a battery casing is sealed by a sealing unit into which a negative electrode terminal plate, a negative electrode current collector joined to the negative electrode terminal plate, and a gasket are integrated. The gasket includes a boss part through which the negative electrode current collector passes, an outer peripheral part in contact with the opening part of the battery casing, and an annular part arranged between the boss part and the outer peripheral part, and a part of the annular part is formed into a thin part serving as a safety valve. The negative electrode current collector has a body diameter of 1.8 mm or smaller and includes at the end part thereof a collar part. The ratio of the outer diameter of the boss part to the outer diameter of the collar part is 4.0 or smaller.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile