ALEXANDRIA, Va., Dec. 9 -- United States Patent no. 12,495,659, issued on Dec. 9, was assigned to The Regents of the University of Michigan.

"High efficiency, color neutral, semi-transparent organic photovoltaics for energy harvesting windows" was invented by Stephen R. Forrest (Ann Arbor, Mich.) and Hafiz K.M. Sheriff Jr. (Ann Arbor, Mich.).

According to the abstract* released by the U.S. Patent & Trademark Office: "An organic photovoltaic device comprises a first electrode, at least one organic heterojunction layer positioned over the first electrode, a second electrode positioned over the organic heterojunction layer, and a thin film stack positioned over the second electrode, comprising a plurality of sublayers of a first dielectric m...