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:
Oct. 14, 2025
Filed:
Aug. 30, 2023
SK Chemicals Co., Ltd., Gyeonggi-do, KR;
Yu-Mi Chang, Gyeonggi-do, KR;
Ju-Sik Kang, Gyeonggi-do, KR;
Jeong Ho Park, Gyeonggi-do, KR;
Hee-Il Chae, Gyeonggi-do, KR;
SK CHEMICALS CO., LTD., Gyeonggi-do, KR;
Abstract
The present invention relates to a method for preparing terephthalic acid, and terephthalic acid prepared therefrom. Specifically, according to one embodiment of the present invention, by including the step of hydrolyzing a compound prepared by depolymerizing a waste polyester using a specific hydrolysis catalyst, terephthalic acid can be prepared in an environmentally friendly manner, and high purity terephthalic acid can be provided.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile