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:
Jun. 17, 2025
Filed:
Sep. 16, 2022
Circ, Llc, Danville, VA (US);
Julie Ann-Crowe Willoughby, Danville, VA (US);
Hsun-Cheng Su, Chapel Hill, NC (US);
Gheorghe Florin Barla, Beavercreek, OH (US);
Timothy Ethan Atwood, Martinsville, VA (US);
Allan Stuart Myerson, Cambridge, MA (US);
Circ, LLC, Danville, VA (US);
Abstract
A method of forming a polyester from a regenerated composition comprising a regenerated diacid and a catalyst obtained from depolymerization of a polyester in a waste material is disclosed. The method comprises: reacting a diol and the regenerated diacid in the regenerated composition to form one or more compounds including an ester bond; optionally providing additional catalyst; and polymerizing the one or more compounds including an ester bond to form a polyester.