US Patent Issued to International Business Machines on March 11 for "Phase change memory cell with double active volume" (New York Inventors)

ALEXANDRIA, Va., March 12 -- United States Patent no. 12,250,889, issued on March 11, was assigned to International Business Machines Corp. (Armonk, N.Y.).

"Phase change memory cell with double active volume" was invented by Timothy Mathew Philip (Albany, N.Y.), Jin Ping Han (Yorktown Heights, N.Y.), Kevin W. Brew (Niskayuna, N.Y.), Ching-Tzu Chen (Ossining, N.Y.) and Injo Ok (Loudonville, N.Y.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A first phase change material layer vertically aligned above a bottom electrode, a dielectric layer vertically aligned above the first phase change material layer, a second phase change material layer vertically aligned above the dielectric layer, an inner electrode physi...