ALEXANDRIA, Va., June 10 -- United States Patent no. 12,290,348, issued on May 6, was assigned to ENDOMAGNETICS Ltd. (Great Britain).

"Systems and methods for detecting magnetic markers for surgical guidance" was invented by Tiziano Agostinelli (Cambridge, Great Britain) and Simon Richard Hattersley (Cambridge, Great Britain).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for detecting a magnetic marker comprises generating a driving magnetic field comprising first and second frequencies and detecting a response magnetic field comprising first and second response components. The magnetic marker provides a non-linear response to the driving signal. A primary portion of the response components is gener...