ALEXANDRIA, Va., June 5 -- United States Patent no. 12,275,567, issued on April 15, was assigned to TOPPAN Holdings Inc. (Tokyo).
"Gas barrier laminate and packaging bag" was invented by Junichi Kaminaga (Tokyo), Yoshiki Koshiyama (Tokyo), Yumiko Kojima (Tokyo) and Rika Ishii (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a gas barrier laminate being capable of hermetic sealing by heat sealing, and having a paper substrate and a vapor-deposited layer, in which the paper substrate has a basis weight of 30 to 100 g/m2, the water vapor transmission rate is 3 g/m2/d or less at 40deg C. and 90% RH, the water vapor transmission rate obtained by folding the gas barrier laminate with the paper sub...