ALEXANDRIA, Va., April 7 -- United States Patent no. 12,593,889, issued on April 7.

"Vented hat sweatband" was invented by Alberto S. Diaz (St. Paul, Minn.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A vented hat sweatband includes a venting layer and a sweatband layer. The venting layer includes an exterior surface, an interior surface that is opposite the exterior surface, a rigid or semi-rigid venting structure and a central opening. The venting structure includes a plurality of airflow pathways extending between the interior and exterior surfaces along a vertical axis from a top side to a bottom side that is opposite the top side. The central opening extends from the exterior surface to the interior s...