US Patent Issued to Dai Nippon Printing on July 28 for "Barrier film and packaging material" (Japanese Inventors)

ALEXANDRIA, Va., July 28 -- United States Patent no. 12,692,057, issued on July 28, was assigned to Dai Nippon Printing Co. Ltd. (Tokyo).

"Barrier film and packaging material" was invented by Kenta Konishi (Tokyo), Tsuyoshi Suzuki (Tokyo), Yosuke Taguchi (Tokyo), Yoshiyuki Ono (Tokyo), Hiroyuki Otaki (Tokyo) and Ryutaro Harada (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "An object of the present invention is to provide a barrier film whose gas barrier properties hardly deteriorate even after a retort treatment and after a Gelboflex test. The barrier film of the present invention includes a barrier coat layer, an inorganic oxide deposition layer, and a substrate layer, in this order, wherein the barr...