ALEXANDRIA, Va., March 24 -- United States Patent no. 12,584,384, issued on March 24, was assigned to Benteler Steel/Tube GmbH (Germany).
"Perforating gun tube and perforating gun" was invented by Waldemar Engel (Paderborn, Germany), Leonhard Rose (Borchen, Germany) and Christopher Halfpap (Paderborn, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to a perforating gun tube, characterized in that the tube is made of a steel alloy comprising, in addition to iron, the following alloying elements, expressed in mass percent: C 0.12-0.22% Si 0.3-1.0% Mn 1.0-4% Cr 0.5-2% Mo 0.1-1%, V 0.05-0.2% Ti 0.02-0.1% and B 0.001-0.01% and impurities due to melting, and that the tube has a...