US Patent Issued to United States of America as Represented by The Secretary of the Army on May 27 for "Metamaterial design with perforated nozzles for acoustic noise reduction" (Alabama Inventor)

ALEXANDRIA, Va., June 17 -- United States Patent no. 12,315,485, issued on May 27, was assigned to United States of America as Represented by The Secretary of the Army (Washington).

"Metamaterial design with perforated nozzles for acoustic noise reduction" was invented by Brittany Consuegra Griffin (Huntsville, Ala.).

According to the abstract* released by the U.S. Patent & Trademark Office: "An acoustic-metamaterial acts as a sound reducing filter in that the level of sound that exits the structure is much less than the magnitude of sound that enters the structure. In forming the structure, modular stages of a given geometry are stacked upon one another to create a cell. Each stage of the cell is provided with a nozzle that is acoustical...