ALEXANDRIA, Va., July 16 -- United States Patent no. 12,358,267, issued on July 15, was assigned to TOPPAN PRINTING Co. Ltd. (Tokyo).
"Protective film and sheet" was invented by Daisuke Murata (Tokyo) and Toru Ookubo (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "A protective film containing a transparent polyolefin resin layer with improved or even superior weather resistance, and a sheet using the protective film. A protective film according to the present embodiment includes at least a transparent polyolefin resin layer. The transparent polyolefin resin layer contains a hindered amine light stabilizer represented by general formula (I) below in a range of 0.05 parts by mass or more and 5 parts by m...