ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,454,597, issued on Oct. 28, was assigned to Mitsubishi Chemical Corp. (Tokyo).
"Polyester resin" was invented by Yoko Tamura (Tokyo), Tadahiro Ozawa (Tokyo), Yoshihiro Kamon (Tokyo) and Takafumi Asai (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "A polyester resin including: structural unit (A) represented by a specific formula; structural unit (B) derived from an aliphatic diol having 3 to 8 carbon atoms (provided that the structural unit (A) is excluded); and at least one structural unit (C) selected from the group consisting of structural unit (c1) derived from a trivalent or higher-valent acid component and structural unit (c2) derived from a...