ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,421,823, issued on Sept. 23, was assigned to Halliburton Energy Services Inc. (Houston).

"Valve including an expandable metal seal" was invented by Luke William Holderman (Singapore) and Brandon Thomas Least (Carrollton, Texas).

According to the abstract* released by the U.S. Patent & Trademark Office: "Provided, in at least one aspect, is a valve, a method for sealing, and a related well system. The valve, in one aspect, includes a housing, and a sliding sleeve disposed in the housing and defining an annular flow path between the sliding sleeve and the housing, the sliding sleeve configured to move from a closed positioned closing the annular flow path to an open position opening t...