ALEXANDRIA, Va., June 5 -- United States Patent no. 12,279,094, issued on April 15, was assigned to Sonion Nederland B.V. (Hoofddorp, Netherlands).

"Acoustic valve, and hearing device including such an acoustic valve" was invented by Theodorus Gerardus Maria Brouwer (Hoofddorp, Netherlands), Laurens De Ruijter (Hoofddorp, Netherlands), Eddy Dubbeldeman (Hoofddorp, Netherlands) and Caspar Titus Bolsman (Hoofddorp, Netherlands).

According to the abstract* released by the U.S. Patent & Trademark Office: "Acoustic valve for a hearing device, including a valve body defining a passageway, and a seat member and shutter member inside the valve body. The shutter member defines a shutter surface that forms a contact portion and a non-contact portio...