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:
Nov. 08, 2022
Filed:
Apr. 24, 2020
SK Innovation Co., Ltd., Seoul, KR;
SK IE Technology Co., Ltd., Seoul, KR;
Hye Jin Lee, Daejeon, KR;
Yun Bong Kim, Daejeon, KR;
Min Sang Park, Daejeon, KR;
Su Ji Lee, Daejeon, KR;
SK Innovation Co., Ltd., Seoul, KR;
SK ie technology Co., Ltd., Seoul, KR;
Abstract
Provided are a separator for a secondary battery and an electrochemical device using the same. More particularly, a composite separator which has a lower Gurley permeability after curing than that before curing when forming a heat-resistant coating layer having low resistance, does not have a Gurley permeability which is greatly increased as compared with the Gurley permeability of a porous substrate itself before forming a coating layer to have an overall low Gurley permeability, and has a high surface hardness to have penetration stability, is provided.