ALEXANDRIA, Va., Dec. 31 -- United States Patent no. 12,509,968, issued on Dec. 30, was assigned to Halliburton Energy Services Inc. (Houston).

"Swaging of charge tube for attachment to perforating hardware" was invented by Jason Paul Metzger (Alvarado, Texas), Matthew Kinter (Burleson, Texas) and Aaron James Bonner (Carrollton, Texas).

According to the abstract* released by the U.S. Patent & Trademark Office: "A variety of charge tubes for perforating gun systems including, in one embodiment, a method attaching a charge tube, comprising swaging one or more ends of the charge tube to form at least one swaged end on the charge tube, wherein the charge tube comprises a plurality of charge ports; and coupling the at least one swaged end to a...