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:
Sep. 10, 2013
Filed:
Feb. 23, 2012
Applicants:
BO Hyun Kim, Daejeon, KR;
Han Ho Lee, Daejeon, KR;
Jong Hyun Chae, Daejeon, KR;
Inventors:
Assignee:
LG Chem, Ltd., Seoul, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M 2/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
Discussed is a pouch type secondary cell with high water-resistance. The pouch type secondary cell includes a positive electrode, a separation layer, and a negative electrode. Here, the sealing unit of the secondary cell includes steps so that the sealing unit has an outer side thinner than an inner side in thickness. The pouch type secondary cell is advantageous in that the manufacture process can be simplified, the water-resistance and sealing property of sealing portions can be further improved, and the manufacture costs can be reduced.