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US Patent 11396579 Polyester film and manufacturing method thereof

Patent 11396579 was granted and assigned to SK Chemicals on July, 2022 by the United States Patent and Trademark Office.

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Patent Applicant

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Current Assignee

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Patent Jurisdiction

United States Patent and Trademark Office

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Patent Number

Patent Inventor Names

Boo-youn Lee0

Yoo Jin Lee0

Sung-Gi Kim0

Date of Patent

July 26, 2022

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Patent Application Number

166251140

Date Filed

June 25, 2018

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Patent Citations Received

US Patent 11560457 MDO thermoresistant heat-shrinkable film

US Patent 11787901 Polyester container and manufacturing method therefor

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The present invention relates to a polyester film and a preparation method thereof. The polyester film is formed of a polyester resin having a specific content of isosorbide and diethylene glycol introduced therein, containing a low content of oligomer, and exhibiting a specific intrinsic viscosity, thereby exhibiting excellent mechanical properties, heat resistance and chemical resistance, and good heat sealability.

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