ALEXANDRIA, Va., Sept. 3 -- United States Patent no. 12,406,980, issued on Sept. 2, was assigned to International Business Machines Corp. (Armonk, N.Y.).

"Aluminum oxide protected lithium metal tunable 3D silicon batteries" was invented by John Collins (Tarrytown, N.Y.), John Ott (Greenwood Lake, N.Y.) and Devendra K. Sadana (Pleasantville, N.Y.).

According to the abstract* released by the U.S. Patent & Trademark Office: "One or more trenches in a silicon substrate have an electrically active surface at a trench base and metal layer disposed on the electrically active surface. Precursor materials are disposed and/or formed on the metal layer in the trench. An anode is patterned either exclusively in the 3D trench or in the 3D trench, side...