ALEXANDRIA, Va., June 9 -- United States Patent no. 12,287,606, issued on April 29, was assigned to Kao Corp. (Tokyo).
"Binder resin composition for toner" was invented by Kota Ijichi (Izumiotsu, Japan), Kunihiro Kano (Wakayama, Japan) and Nobumichi Kamiyoshi (Wakayama, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A resin binder composition for toners, containing a polyester resin A which is a polycondensate A of raw materials A containing an alkylene oxide adduct of bisphenol A, an aromatic dicarboxylic acid compound, a trivalent or higher polyvalent raw material monomer being at least any one of a trihydric or higher polyhydric alcohol and a tricarboxylic or higher polycarboxylic acid compound, and...