ALEXANDRIA, Va., July 16 -- United States Patent no. 12,669,298, issued on June 30, was assigned to Schlumberger Technology Corp. (Sugar Land, Texas).

"Equipment and method using elastic turbulence" was invented by Andrew Clarke (Cambridge, Great Britain), Adam Colbourne (Cambridge, Great Britain) and Mahdi Davoodi (Cambridge, Great Britain).

According to the abstract* released by the U.S. Patent & Trademark Office: "A chamber, e.g. in a heat exchanger or flowing electrolytic half-cell, for through flow of a fluid which is capable of elastic turbulence has an internal structure with obstructions to compel flow to undergo successive changes of direction thereby applying stress to the flow of fluid through the chamber. The internal structur...