ALEXANDRIA, Va., April 15 -- United States Patent no. 12,604,449, issued on April 14, was assigned to 3M Innovative Properties Co. (St. Paul, Minn.).
"Electromagnetic absorbing composites" was invented by Adam D. Miller (Vadnais Heights, Minn.), Sergei A. Manuilov (Bayport, Minn.), Michael S. Graff (Woodbury, Minn.) and Dipankar Ghosh (Oakdale, Minn.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A composite comprising a polymeric matrix and EM absorbers dispersed within the polymeric matrix. Each EM absorber comprises a dielectric flake, and a continuous magnetic coating on at least one major surface of the dielectric flake. The EM absorbers function as dielectric and magnetic absorbers in the 1-100 GHz fre...