ALEXANDRIA, Va., March 19 -- United States Patent no. 12,253,783, issued on March 18, was assigned to Cardinal IG Co. (Eden Prairie, Minn.).

"High performance privacy glazing structures" was invented by Nicolas Le Houx (Minneapolis), Hari Atkuri (Plymouth, Minn.), Andrew DeMiglio (Savage, Minn.) and Eric Bjergaard (Minneapolis).

According to the abstract* released by the U.S. Patent & Trademark Office: "A privacy glazing structure may be fabricated from multiple panes of transparent material that hold an optically active material and also define a between-pane space that is separated from a surrounding environment for thermal insulating properties. The privacy glazing structure may include various functional coatings and intermediate film...