ALEXANDRIA, Va., Aug. 6 -- United States Patent no. 12,381,386, issued on Aug. 5, was assigned to NUtech Ventures (Lincoln, Neb.).

"Systems and methods for a power-line filter utilizing conductive concrete/shotcrete" was invented by Lim Nguyen (Lincoln, Neb.) and Christopher Tuan (Lincoln, Neb.).

According to the abstract* released by the U.S. Patent & Trademark Office: "An electrical filter is disclosed. The electrical filter can include a conductive concrete structure including at least one of a conductive carbon material, a magnetic material, or a conductive metallic material. The conductive concrete structure is characterized by an electrical conductivity greater than 0.5 siemens per meter. The electrical filter also includes at least...