ALEXANDRIA, Va., Aug. 12 -- United States Patent no. 12,703,177, issued on Aug. 11, was assigned to TOPPAN Holdings Inc. (Tokyo).
"Barrier film and laminate" was invented by Miki Fukugami (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "A barrier film including a substrate film containing a polyolefin, in which when both surfaces of the barrier film are analyzed with a fluorescent X-ray analyzer, a value obtained by dividing a sum of fluorescent X-ray intensities of chlorine detected from the both surfaces by a thickness of the substrate film (the sum of fluorescent X-ray intensities of chlorine/the thickness of the substrate film) is 0.015 kcps/micro metre or less."
The patent was filed on Feb. 21, 20...