ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,446,232, issued on Oct. 14, was assigned to International Business Machines Corp. (Armonk, N.Y.).

"MRAM-based chip identification with free random programming" was invented by Kangguo Cheng (Schenectady, N.Y.), Dimitri Houssameddine (Sunnyvale, Calif.), Julien Frougier (Albany, N.Y.) and Ruilong Xie (Niskayuna, N.Y.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A magnetoresistive random access memory (MRAM) device having chip identification using normal operating voltages is provided. No dedicated programming is needed. Instead, programming of the MRAM device is free and random and is a result of providing a magnetic via structure sufficiently close to...