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. 21, 2017
Filed:
Dec. 22, 2014
Samsung Sdi Co., Ltd., Yongin-si, Gyeonggi-do, KR;
Kee Wook Kim, Suwon-si, KR;
Sang Ho Lee, Suwon-si, KR;
Yong Bae Lee, Suwon-si, KR;
Jung Seong Lee, Suwon-si, KR;
Jung Sue Jang, Suwon-si, KR;
Jae Hyun Cho, Suwon-si, KR;
Dae Hyun Hong, Suwon-si, KR;
SAMSUNG SDI CO., LTD., Yongin-Si, Gyeonggi-Do, KR;
Abstract
A method for manufacturing a polyolefin separator, including forming a sheet including a polyolefin resin and a plasticizer; stretching the sheet Etimes in a longitudinal direction at a temperature of T, followed by stretching the sheet Etimes in a transverse direction at a temperature of T, wherein T<115° C., T<115° C., and T≧T, and E×E=55 to 80, E≧7, and E≧7; and extracting the plasticizer from the stretched sheet.