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:
Mar. 04, 2025
Filed:
Feb. 14, 2020
Applicant:
Lg Chem, Ltd., Seoul, KR;
Inventors:
Jeeseon Kim, Daejeon, KR;
Kyunghwan Kim, Daejeon, KR;
Hoyong Lee, Daejeon, KR;
Cheol Jun Song, Daejeon, KR;
Assignee:
LG CHEM, LTD., Seoul, KR;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C 323/42 (2006.01); C08G 73/10 (2006.01); C08J 5/18 (2006.01);
U.S. Cl.
CPC ...
C07C 323/42 (2013.01); C08G 73/10 (2013.01); C08J 5/18 (2013.01); C08J 2379/08 (2013.01);
Abstract
Disclosed is a novel diamine compound comprising a structure in which diphenyl sulfide in a molecule is bonded through an amide bond to a phenyl ring substituted with an amine group. A polyimide film prepared by polymerizing the novel diamine compound exhibits improved mechanical and thermal properties and an enhanced refractive index.
Kim, Jeeseon. (2025). Diamine compound, and polyimide precursor and polyimide film using same (U.S. Patent No. 12240803). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12240803
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile