ALEXANDRIA, Va., Dec. 16 -- United States Patent no. 12,498,198, issued on Dec. 16, was assigned to Raytheon Co. (Arlington, Va.).

"Energetic material container having a heavy inert gas insulating layer" was invented by John Rascon (Tucson, Ariz.), Christopher M. Schott (Andover, Kan.) and Mark J. Meisner (Tucson, Ariz.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Heavy inert gas insulation layer(s) are provided for containers configured to contain components that include an energetic material. The heavy inert gas insulation layer delays desensitization or inhibits premature reaction of the energetic material due to high external temperatures. The layers may be formed in hollow walls of the container itsel...