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:
Dec. 30, 2014
Filed:
Dec. 20, 2012
Applicant:
Samsung Total Petrochemicals Co., Ltd., Seosan-si, KR;
Inventors:
Dae Ho Park, Seoul, KR;
Do Hoon Lee, Seosan-si, KR;
Assignee:
Samsung Total Petrochemicals Co., Ltd., Seosan-Si, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M 2/16 (2006.01); H01M 2/14 (2006.01);
U.S. Cl.
CPC ...
H01M 2/16 (2013.01); H01M 2/1686 (2013.01); H01M 2/1653 (2013.01); H01M 2/145 (2013.01);
Abstract
Provided is a microporous separator for a lithium secondary battery having shutdown properties wherein the separator comprises a propylene random copolymer which has a melt index of 0.5-10 g/10 minutes and comprises one or more species of comonomers in the content of 0.1-8 wt %.