ALEXANDRIA, Va., Nov. 25 -- United States Patent no. 12,478,677, issued on Nov. 25, was assigned to Board of Trustees of Michigan State University (East Lansing, Mich.).

"Tunable luminescent organic salts for enhanced imaging and photodynamic therapy" was invented by Richard R. Lunt (Williamston, Mich.), Sophia Y. Lunt (Williamston, Mich.), Deanna Broadwater (Haslett, Mich.), Margaret Young (Hillsboro, Ore.) and Matthew Bates (East Lansing, Mich.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method of exciting an organic salt in a cell is provided. The method includes contacting the cell with a composition including the organic salt, the organic salt having a photoactive ion and a counterion. The cell upt...