ALEXANDRIA, Va., June 17 -- United States Patent no. 12,317,400, issued on May 27, was assigned to Teledyne ETM Inc. (Newark, Calif.).

"Scanning linear accelerator system for producing X-rays of variable controlled dose per pulse" was invented by William L. Nighan Jr. (Portola Valley, Calif.), Maarten Korringa (Mountain View, Calif.), John Howard Rolin (Morgan Hill, Calif.) and Devin Henderlong (Boulder Creek, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A linac-based X-ray system for cargo scanning and imaging applications uses linac design, RF power control, beam current control, and beam current pulse duration control to provide variable controlled dose per pulse to permit scanning a portion of a...