ALEXANDRIA, Va., June 9 -- United States Patent no. 12,286,834, issued on April 29, was assigned to Catalyst Acoustics Group Inc. (Agawam, Mass.).

"Sound damping door" was invented by Michael D. Daut (Batavia, Ill.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A sound damping door system having a door frame, a compression seal, a door slab, a bottom seal, and a concealed hinge assembly. The door frame includes male and female components adapted to engage each other in a rough door opening between first and second wall faces; and at least one isolation gasket adapted to be disposed between the male and female components. The compression seal is mounted to the door frame. The door slab includes an outer skin;...