ALEXANDRIA, Va., July 15 -- United States Patent no. 12,664,249, issued on June 23, was assigned to ST. JUDE MEDICAL CARDIOLOGY DIVISION INC. (St. Paul, Minn.).

"Centralized ledger system for device authentication" was invented by Isaac Remer (Richfield, Minn.), Timothy S. Marass (Minneapolis), Derek Sutermeister (Ham Lake, Minn.) and Hai Huang (Woodbury, Minn.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method of authenticating devices utilizes a central ledger distributed to a plurality of local systems includes storing a unique identifier locally on each device, modifying a central ledger to include an entry associated with the unique identifier and communicating the central ledger to a plurality of ...