ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,422,096, issued on Sept. 23, was assigned to Mitsubishi Gas Chemical Co. Inc. (Tokyo).
"Liner and pressure vessel" was invented by Keisuke Ito (Hiratsuka, Japan) and Nobuhiko Matsumoto (Hiratsuka, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "To provide a liner which contains a polyamide resin, wherein the polyamide resin contains a diamine-derived structural unit and a dicarboxylic acid-derived structural unit; 50 mol % or more of the diamine-derived structural unit is derived from a xylylenediamine; a content of a toughness improver in a region up to 30% in a thickness direction from one surface of the liner is from 5 to 20 mass %; and a conte...