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. 14, 2015
Filed:
Feb. 24, 2011
Pil-kyu Park, Daejeon, KR;
Jong-hun Kim, Daejeon, KR;
Jang-hyuk Hong, Daejeon, KR;
Byoung-jin Shin, Daejeon, KR;
In-chul Kim, Daejeon, KR;
Pil-Kyu Park, Daejeon, KR;
Jong-Hun Kim, Daejeon, KR;
Jang-Hyuk Hong, Daejeon, KR;
Byoung-Jin Shin, Daejeon, KR;
In-Chul Kim, Daejeon, KR;
LG Chem, Ltd., , KR;
Abstract
A separator includes a planar non-woven fabric substrate having a plurality of pores, and a porous coating layer provided on at least one surface of the non-woven fabric substrate and made of a mixture of a plurality of inorganic particles and a binder polymer, wherein the non-woven fabric substrate is made of superfine fibers having an average thickness of 0.5 to 10 μm, and wherein, among the pores in the non-woven fabric substrate, pores having a wide diameter of 0.1 to 70 μm are 50% or above of the entire pores. The above separator having the porous coating layer may generate the generation of leak current without increasing a loading weight of the porous coating layer since the non-woven fabric substrate having a controlled pore side by using superfine fibers of a predetermined thickness is used.