ALEXANDRIA, Va., July 14 -- United States Patent no. 12,680,904, issued on July 14, was assigned to Halliburton Energy Services Inc. (Houston).

"External pressure testing fixture for tubing unions" was invented by Matthew S. Gray (Spring, Texas) and Paul James (Spring, Texas).

According to the abstract* released by the U.S. Patent & Trademark Office: "A system may include a sealing sleeve disposable about a tubing union joining a lower tubing and an upper tubing, at least one lower seal disposable proximate a lower end of the tubing union between the sealing sleeve and the lower tubing, and at least one upper seal disposable proximate an upper end of the tubing union between the sealing sleeve and the upper tubing. The at least one upper ...