ALEXANDRIA, Va., Dec. 23 -- United States Patent no. 12,502,862, issued on Dec. 23, was assigned to Long PipesUSA Inc. (Yangebup, Australia).
"Flexible tubular structure" was invented by Arthur Derrick Bray Graham (North Fremantle, Australia) and Neil Deryck Bray Graham (Coogee, Australia).
According to the abstract* released by the U.S. Patent & Trademark Office: "A tube and a method of constructing such a tube, the tube being in the form of a composite film structure comprising a co-extrusion of a plurality of layers bonded together to provide an integrated structure. The layers comprise an inner layer, an intermediate layer and outer layer. The intermediate layer is of a material compatible with two adjacent layers between which it is ...