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:
May. 23, 2023
Filed:
Dec. 07, 2018
Applicant:
Lg Chem, Ltd., Seoul, KR;
Inventors:
Bi Oh Ryu, Daejeon, KR;
Soonyong Park, Daejeon, KR;
Youngseok Park, Daejeon, KR;
Il Hwan Choi, Daejeon, KR;
Young Ji Tae, Daejeon, KR;
Kwanyeol Paek, Daejeon, KR;
Assignee:
LG CHEM, LTD., Seoul, KR;
Primary Examiner:
Int. Cl.
CPC ...
C08F 283/00 (2006.01); C08J 5/18 (2006.01);
U.S. Cl.
CPC ...
C08F 283/00 (2013.01); C08J 5/18 (2013.01); C08J 2379/08 (2013.01);
Abstract
The present invention relates to an aromatic poly(amide-imide) copolymer film having high retardation in the thickness direction and exhibiting a low moisture absorption rate, and a method for preparing the same.