ALEXANDRIA, Va., March 19 -- United States Patent no. 12,252,565, issued on March 18, was assigned to KURARAY EUROPE GmbH (Hattersheim, Germany).
"Method for producing ionomer resin" was invented by Tomoka Shirouchi (Tsukuba, Japan), Kenta Takemoto (Tsukuba, Japan), Takuro Niimura (Tsukuba, Japan), Atsuhiro Nakahara (Tsukuba, Japan) and Yoshiaki Asanuma (Kurashiki, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to a method of manufacturing an ionomer resin, comprising the steps of: (i) adding a poor solvent to a crude ionomer resin solution comprising a (meth)acrylic acid unit (A), a neutralized (meth)acrylic acid unit (B) and an ethylene unit (C) to allow a granular resin...