ALEXANDRIA, Va., June 4 -- United States Patent no. 12,319,868, issued on June 3, was assigned to Halliburton Energy Services Inc. (Houston).

"Methods of making and using a thixotropic cement composition" was invented by Sandip Prabhakar Patil (Pune, India), Malharrao Hambirrao Jadhav (Pune, India) and Ganesh Shriniwas Pangu (Pune, India).

According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed herein is a method of servicing a wellbore penetrating a subterranean formation with a thixotropic cement composition. The thixotropic cement composition comprises a cementitious material, maltodextrin, and an aqueous fluid, has a 10-minute gel strength of from about 30 lbf/100 ft2 to about 300 lbf/100 ft2, and can be ...