ALEXANDRIA, Va., Aug. 26 -- United States Patent no. 12,398,290, issued on Aug. 26, was assigned to NAN YA PLASTICS Corp. (Taipei, Taiwan).

"Method for manufacturing heat sealable polyester film" was invented by Wen-Cheng Yang (Taipei, Taiwan), Te-Chao Liao (Taipei, Taiwan), Chia-Yen Hsiao (Taipei, Taiwan) and Ching-Yao Yuan (Taipei, Taiwan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for manufacturing a heat sealable polyester film is provided. A part of a recycled polyester material is physically reproduced to obtain physically regenerated polyester chips. Another part of a recycled polyester material is chemically reproduced to obtain chemically regenerated polyester chips. Modified polyester c...