ALEXANDRIA, Va., June 25 -- United States Patent no. 12,338,575, issued on June 24, was assigned to TORAY INDUSTRIES Inc. (Tokyo).
"Sheet material and method for producing same" was invented by Koki Ishii (Osaka, Japan), Ryuji Shikuri (Gifu, Japan) and Takuya Shibano (Otsu, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "The sheet material according to the present invention has a polymer elastic body and a fibrous base material comprising ultrafine fibers, wherein the average single fiber diameter of the ultrafine fibers is 0.1 micro metre to 10.0 micro metre, the polymer elastic body has a hydrophilic group and an N-acylurea bond and/or an isourea bond, and the following conditions are satisfied: the l...