ALEXANDRIA, Va., Sept. 15 -- United States Patent no. 12,735,529, issued on Sept. 15, was assigned to TOYOBO MC Corp. (Osaka, Japan).
"Polyester resin" was invented by Hironao Sasaki (Osaka, Japan), Keiichiro Togawa (Shiga, Japan) and Hiroaki Fukushima (Fukui, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "An object of the present invention is to provide a polyester resin excellent in moldability, surface smoothness, transparency, mechanical characteristics, and heat-resistance, with reduced generation of gel. The present invention relates to a polyester resin comprising a constituent moiety derived from dicarboxylic acid component and a constituent moiety derived from alcohol component, wherein a cont...