ALEXANDRIA, Va., Jan. 20 -- United States Patent no. 12,528,957, issued on Jan. 20, was assigned to SEIKO EPSON Corp. (Japan).
"White ink jet ink composition and ink jet recording method" was invented by Ryota Miyasa (Matsumoto, Japan) and Kazuto Aoki (Shiojiri, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A white ink jet ink composition according to the present disclosure includes hollow resin particles, resin particles, and water. The hollow resin particles have a glass transition temperature of 120deg C. or more, the resin particles are composed of an acrylic resin or a urethane resin, and the content of the resin particles is 5% by mass or more relative to the total mass of the ink composition."...