ALEXANDRIA, Va., Feb. 17 -- United States Patent no. 12,555,087, issued on Feb. 17, was assigned to Walmart Apollo LLC (Bentonville, Ark.).
"Polymer-based radiopaque ink formulations and uses thereof" was invented by Dipanjan Pan (State College, Pa.), Zachary MT Sheffield (Belcamp, Md.) and David D. Skrodzki (State College, Pa.).
According to the abstract* released by the U.S. Patent & Trademark Office: "In some embodiments, apparatuses and methods are provided herein useful for identifying an object using radiopaque ink. In some embodiments, a system for identifying an object comprises an object having an identifying marking formed of a radiopaque ink comprising a polymer matrix having an average molecular weight of about 1,000 g/mol to ...