ALEXANDRIA, Va., June 16 -- United States Patent no. 12,303,862, issued on May 20, was assigned to Montana Technological University (Butte, Mont.).

"Non-toxic nanomaterial for metals extraction" was invented by Jessica M. Andriolo (Butte, Mont.), M. Katie Hailer (Butte, Mont.), Jack L. Skinner (Butte, Mont.), Jerome P. Downey (Butte, Mont.), David L. Hutchins (Butte, Mont.) and Teagan Leitzke (Butte, Mont.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Fresh water contamination by heavy metals results from a variety of sources and can be damaging to wildlife, alter landscapes, and impact human health. metals removal form water sources is desirable for improving water quality and preventing adverse effects, b...