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:
Sep. 09, 2025
Filed:
Mar. 12, 2021
Applicant:
Doosan Corporation, Seoul, KR;
Inventors:
Kwangseok Park, Yongin-si, KR;
Euidock Ryu, Yongin-si, KR;
Inki Jeong, Yongin-si, KR;
Subyung Park, Yongin-si, KR;
Dongho Chae, Yongin-si, KR;
Assignee:
DOOSAN CORPORATION, Seoul, KR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B32B 41/00 (2006.01); C09J 7/30 (2018.01); C09J 109/02 (2006.01); C09J 163/00 (2006.01); H05K 3/28 (2006.01);
U.S. Cl.
CPC ...
C09J 163/00 (2013.01); C09J 7/30 (2018.01); C09J 109/02 (2013.01); H05K 3/281 (2013.01);
Abstract
An adhesive composition, and a coverlay film and a printed circuit board that include the adhesive composition are disclosed. The adhesive composition includes: (a) an epoxy resin; and (b) a binder resin including epoxidized polybutadiene rubber and at least two kinds of rubber. The adhesive composition can form an adhesive layer superb in terms of adhesiveness, fluidity, filling properties (landfilling), migration resistance, heat resistance, flame retardancy, low elongation, and flexibility.