ALEXANDRIA, Va., March 24 -- United States Patent no. 12,583,982, issued on March 24, was assigned to Microworks Co. ltd. (Chungcheongbuk-do, South Korea).

"Polyester film, heat-shrinkable label and packaging comprising same" was invented by Joo Ho Yang (Gyeonggi-do, South Korea), Chul Kyu Kim (Gyeonggi-do, South Korea), Yong Deuk Kim (Gyeonggi-do, South Korea) and Seung Kyun Kim (Gyeonggi-do, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "The polyester film according to the embodiment prepared while the crystallinity of a copolymerized polyester film is controlled can be improved in thermal properties and chemical properties. Specifically, the polyester film has not only an excellent shrinkage r...