ALEXANDRIA, Va., March 19 -- United States Patent no. 12,251,915, issued on March 18, was assigned to Dai Nippon Printing Co. Ltd. (Tokyo).
"Decorative sheet" was invented by Takehiko Hiroshima (Tokyo), Yoshio Okabe (Tokyo) and Yoshio Sukegawa (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a decorative sheet having excellent abrasion-resistance. Also, provided is a decorative sheet capable of reducing abrasion sound. A decorative sheet is provided with; a linear irregularity pattern formed by a plurality of groove parts arranged side by side; and a protrusion pattern that coexists inside the linear irregularity pattern, is arranged at random without having any regularity with respect to th...