ALEXANDRIA, Va., June 4 -- United States Patent no. 12,319,779, issued on June 3, was assigned to BOARD OF TRUSTEES OF MICHIGAN STATE UNIVERSITY (East Lansing, Mich.).

"Lignin-based polyurethane prepolymers, polymers, related compositions, and related methods" was invented by Mojgan Nejad (Okemos, Mich.) and Saeid Nikafshar (East Lansing, Mich.).

According to the abstract* released by the U.S. Patent & Trademark Office: "The disclosure relates to a polyurethane prepolymer and corresponding crosslinked network polymer incorporating lignin as a natural polyol in the polyurethane system. The polyurethane prepolymer includes a reaction product between an isocyanate, lignin, and a cyclic alkyl carbonate. The reaction product includes (i) free ...