ALEXANDRIA, Va., June 4 -- United States Patent no. 12,320,848, issued on June 3, was assigned to Synopsys Inc. (Sunnyvale, Calif.).

"Superconductive integrated circuit devices with on-chip testing" was invented by Abdelrahman G. Qoutb (Beaverton, Ore.), Eby G. Friedman (Rochester, N.Y.), Robert E. Freeman (Menlo Park, Calif.), Jamil Kawa (Campbell, Calif.) and Stephen Robert Whiteley (Sunnyvale, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "On-chip testing of a superconductive integrated circuit device includes receiving a superconductive circuit design having superconductive logic elements. Further, a first testability characteristic for first test circuitry at a first node within the superconducti...