ALEXANDRIA, Va., Feb. 3 -- United States Patent no. 12,540,691, issued on Feb. 3, was assigned to NIPPON PILLAR PACKING Co. LTD. (Osaka, Japan).
"Tube fitting" was invented by Toshihide Iida (Osaka, Japan), Kenji Onishi (Osaka, Japan), Hiroki Tanabe (Osaka, Japan), Yu Notoji (Osaka, Japan) and Shohei Minamihara (Osaka, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A fitting connects a first tube with a second tube. At least one of the tubes is twistable. The fitting includes a tubular body and a sleeve. A first axial end portion of the body includes a connector for the first tube. A second axial end portion of the body includes an annular groove and an internal thread. A first axial end portion of the...