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:
Dec. 16, 2025
Filed:
Dec. 02, 2019
Applicant:
Pi Advanced Materials Co., Ltd., Chungcheongbuk-do, KR;
Inventors:
Sung-Yul Back, Chungcheongbuk-do, KR;
Kil-Nam Lee, Chungcheongbuk-do, KR;
Assignee:
PI Advanced Materials Co., Ltd., Chungcheongbuk-do, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G 73/10 (2006.01); B32B 15/08 (2006.01); B32B 27/08 (2006.01); B32B 27/20 (2006.01); B32B 27/28 (2006.01); C08J 5/18 (2006.01);
U.S. Cl.
CPC ...
C08G 73/1021 (2013.01); B32B 15/08 (2013.01); B32B 27/08 (2013.01); B32B 27/20 (2013.01); B32B 27/281 (2013.01); C08J 5/18 (2013.01); B32B 2307/204 (2013.01); B32B 2307/41 (2013.01); B32B 2307/7265 (2013.01); C08J 2379/08 (2013.01);
Abstract
Disclosed herein is provided a method for manufacturing a polyimide film, the method comprising the steps of: preparing a polyamic acid solution; preparing a polyamic add composition by adding 2-3 mole equivalents of a dehydrating agent to the polyamic acid solution; and applying the polyamic acid to a support to form a film, followed by thermosetting the film in a heater.