ALEXANDRIA, Va., April 15 -- United States Patent no. 12,601,688, issued on April 14, was assigned to The Trustees of Columbia University in the City of New York (New York) and Barnard College (New York).

"Silver coordination polymers for measuring arsenic levels in water" was invented by Michael G. Campbell (New York), Benjamin C. Bostick (New York) and Natasha Reich (New York).

According to the abstract* released by the U.S. Patent & Trademark Office: "Measurement devices can be used for identifying concentration of arsenic species in water samples. The measurement devices can take the form of test strips including a substrate with at least one testing region that includes an amount of a testing medium. The silver reagent includes a pol...