US Patent Issued to XR Reserve on April 22 for "Downhole drilling tool with a polycrystalline diamond bearing" (Texas Inventors)

ALEXANDRIA, Va., June 6 -- United States Patent no. 12,281,541, issued on April 22, was assigned to XR Reserve LLC (Houston).

"Downhole drilling tool with a polycrystalline diamond bearing" was invented by Gregory Prevost (Spring, Texas), Michael V. Williams (Conroe, Texas), Edward C. Spatz (Spring, Texas), Michael R. Reese (Houston), William W. King (Houston) and David P. Miess (Magnolia, Texas).

According to the abstract* released by the U.S. Patent & Trademark Office: "A downhole tool for use in a downhole drill string is provided. The downhole tool includes a rotor movably coupled within a stator, and a drive shaft movably coupled within a bearing housing. The drive shaft has a first end coupled with the rotor and a second end coupled...