ALEXANDRIA, Va., Nov. 25 -- United States Patent no. 12,480,856, issued on Nov. 25, was assigned to SAUDI ARABIAN OIL COMPANY (Dhahran, Saudi Arabia).
"Differential sticking test fixture" was invented by Richard Mark Pye (Aberdeenshire, Great Britain) and Rae Andrew Younger (Aberdeenshire, Great Britain).
According to the abstract* released by the U.S. Patent & Trademark Office: "A test fixture includes a cylindrical main body extending in a longitudinal direction that receives a test piece. The main body includes a cylindrical screen filter with a mesh surface that extends in along a longitudinal axis coincident with an axis of the main body. The mesh surface generates a filter cake when particle-entrained fluid is supplied through the m...