US Patent Issued to LEXMARK INTERNATIONAL on May 19 for "Security device computation matching" (Kentucky Inventors)

ALEXANDRIA, Va., May 19 -- United States Patent no. 12,634,141, issued on May 19, was assigned to LEXMARK INTERNATIONAL INC. (Lexington, Ky.).

"Security device computation matching" was invented by Timothy John Rademacher (Richmond, Ky.), Jennifer Topmiller Williams (Lexington, Ky.) and Zachary Nathan Fister (Lexington, Ky.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for determining authenticity of a supply item for an imaging system, the method comprising: performing a cryptographic algorithm on the imaging system, starting with a first algorithm input, performing the cryptographic algorithm on the supply item, starting with the first algorithm input, determining authenticity of the supply item ...