ALEXANDRIA, Va., Nov. 3 -- United States Patent no. 12,781,882, issued on Nov. 3, was assigned to Polyflow LLC (Midland, Texas).
"Reinforced thermoplastic pipes" was invented by Jean-Louis Poisson (Midland, Texas).
According to the abstract* released by the U.S. Patent & Trademark Office: "There is provided a permeation barrier layer for a reinforced thermoplastic pipe for transportation of oilfield fluids. The permeation barrier layer comprises (i) an external layer comprising a first thermoplastic polymer, (ii) an intermediate layer comprising ethylene vinyl alcohol (EVOH) copolymers, and (iii) an internal layer comprising a polyamide. At least a portion of the intermediate layer is in contact with the external layer and/or the internal...