ALEXANDRIA, Va., May 19 -- United States Patent no. 12,632,873, issued on May 19, was assigned to Microtrace LLC (Minneapolis).

"Strategies and systems that use spectral signatures and a remote authentication authority to authenticate physical items and linked documents" was invented by Brian J. Brogger (Blaine, Minn.), Joseph T. Ippoliti (Woodbury, Minn.), Blake M. Roeglin (Minneapolis) and Brian T. Bustrom (Mounds View, Minn.).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention provides improved spectral signature strategies for use to confirm the authenticity of a substrate and associated documentation."

The patent was filed on Aug. 18, 2021, under Application No. 18/021,516.

*For furthe...