ALEXANDRIA, Va., June 12 -- United States Patent no. 12,297,590, issued on May 13, was assigned to DIC Corp. (Tokyo).
"Foam sheet and synthetic leather" was invented by Miwa Ueguchi (Takaishi, Japan) and Tomohiro Tetsui (Takaishi, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A task to be achieved by the invention is to provide a foamed sheet having excellent retention of foam, hand feeling, and peel strength. The present invention provides a foamed sheet which is formed from a water dispersion of a urethane resin (X), wherein the water dispersion has a urethane resin (X) content of 50 to 80% by mass, and the water dispersion contains no organic solvent. Further, the present invention provides a synth...