ALEXANDRIA, Va., Feb. 19 -- United States Patent no. 12,230,854, issued on Feb. 18, was assigned to 3M Innovative Properties Co. (St. Paul, Minn.).

"System with magnetic film for reducing passive intermodulation" was invented by Charles L. Bruzzone (Woodbury, Minn.), Jeffrey A. Tostenrude (Leander, Texas), Zohaib Hameed (Woodbury, Minn.) and Jeffrey D. Keeney (Hudson, Wis.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A wireless communication system includes a transmitter configured to transmit at least first and second radio waves having respective different frequencies F1 and F2, an electrically conductive first passive substantially linear medium, an electrically conductive first passive substantially no...