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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.:

US 12331175 B1

PDFFull Text
Date of Patent:
Jun. 17, 2025

Filed:

Jul. 12, 2024

Polyester film and preparation method thereof

Applicant:

SK Chemicals Co., Ltd., Gyeonggi-do, KR;

Inventors:

Da-Young Hwang, Gyeonggi-do, KR;

Yoo Jin Lee, Gyeonggi-do, KR;

Assignee:

SK Chemicals CO., Ltd., Gyeonggi-do, KR;

Attorney:

Sheridan Ross, PC

Primary Examiner:

Sheeba Ahmed

Int. Cl.
CPC ...
C08J 5/18 (2006.01); B29C 48/00 (2019.01); B29C 48/08 (2019.01); B29C 55/00 (2006.01); B29C 55/14 (2006.01); B29C 71/02 (2006.01); C08G 63/183 (2006.01); C08G 63/80 (2006.01); C08L 67/02 (2006.01); B29K 67/00 (2006.01); B29L 7/00 (2006.01);
U.S. Cl.
CPC ...
C08J 5/18 (2013.01); B29C 48/0018 (2019.02); B29C 48/022 (2019.02); B29C 48/08 (2019.02); B29C 55/005 (2013.01); B29C 55/14 (2013.01); B29C 71/02 (2013.01); C08G 63/183 (2013.01); C08G 63/80 (2013.01); C08L 67/02 (2013.01); B29K 2067/003 (2013.01); B29L 2007/008 (2013.01); C08J 2367/02 (2013.01); C08J 2467/02 (2013.01); C08L 2205/02 (2013.01);
Abstract

The present disclosure relates to a polyester film and a preparation method of the same. Since the polyester film includes a resin layer formed from a mixture comprising a polyester resin, which includes a first diol moiety derived from isosorbide and a second diol moiety derived from cyclohexanedimethanol in a controlled ratio, and polyethylene terephthalate in a specific ratio, it is possible to exhibit improved heat resistance and adhesion with excellent light transmittance.

Find Patent Forward Citations

Hwang, Da-Young. (2025). Polyester film and preparation method thereof (U.S. Patent No. 12331175). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12331175

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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