ALEXANDRIA, Va., April 21 -- United States Patent no. 12,605,574, issued on April 21.
"Face mask having improved air permeability" was invented by Hyungchul Kim (Incheon, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed is a face mask having improved air permeability. Provided is a face mask having improved air permeability according to one aspect of the present invention, the face mask including a mask main body configured to cover a part of a user's face including the user's nose and mouth, a folded region formed by folding a part of the mask main body to increase a vent area and decrease airflow resistance when breathing, and support bands coupled to the mask main body and configured t...