ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,424,557, issued on Sept. 23, was assigned to International Business Machines Corp. (Armonk, N.Y.).

"Dual structured buried rail" was invented by Huai Huang (Clifton Park, N.Y.), Nicholas Anthony Lanzillo (Wynantskill, N.Y.), Ruilong Xie (Niskayuna, N.Y.), Hosadurga Shobha (Niskayuna, N.Y.) and Lawrence A. Clevenger (Saratoga Springs, N.Y.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A dual structure buried rail includes an upper rail and a lower rail. The upper rail may be inset relative to the lower rail. In other words, the lower rail may be wider than the upper rail, and/or the lower rail may have a larger geometrical volume than the upper rail. T...