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:
Jul. 29, 2014
Filed:
Apr. 20, 2011
Applicants:
Gwi Gwon Kang, Daejeon, KR;
Jang-weon Rhee, Daejeon, KR;
IN Hwa Jung, Cheonan-si, KR;
Inventors:
Assignee:
SK Innovation Co., Ltd., Seoul, KR;
Primary Examiner:
Int. Cl.
CPC ...
C08J 5/18 (2006.01); B29C 55/00 (2006.01); B29C 55/12 (2006.01); B29C 55/14 (2006.01); B29C 55/30 (2006.01);
U.S. Cl.
CPC ...
Abstract
Provided is a method of manufacturing a microporous polyolefin film useable as a battery separator, which is easy to control strength, permeability and shrinking properties of the microporous film and embodies excellent quality uniformity and production stability in fabricating the microporous film.