ALEXANDRIA, Va., Sept. 15 -- United States Patent no. 12,735,323, issued on Sept. 15, was assigned to ASAHI KASEI K.K. (Tokyo).
"GIS-type zeolite" was invented by Takayuki Akaogi (Tokyo), Atsushi Ohkubo (Tokyo) and Saya Tanaka (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "A GIS-type zeolite having a carbon atom content of 4% by mass or less and a silica-alumina ratio of 4.23 or more, wherein the GIS-type zeolite satisfies at least one of the following conditions (i) and (ii) in a spectrum obtained by X-ray diffraction: (i) when heights of peaks around 2Theta=12.45 and 28.07deg are respectively defined as A and B, 0.62less than equal toA/B is satisfied; and (ii) when heights of peaks around 2Theta=28....