US Patent Issued to 3M Innovative Properties on July 14 for "Field check for hearing protection devices" (Canadian, American Inventors)

ALEXANDRIA, Va., July 14 -- United States Patent no. 12,684,303, issued on July 14, was assigned to 3M Innovative Properties Co. (St. Paul, Minn.).

"Field check for hearing protection devices" was invented by Antoine J. Bernier (Montreal), Paul D. Henry (Carmel, Ind.), Alexandre J. Raymond (Montreal), Jeffrey L. Hamer (Spingville, Ind.) and Cameron J. Fackler (Indianapolis).

According to the abstract* released by the U.S. Patent & Trademark Office: "Systems and methods for check a relative sensitivity of two or more microphones of a hearing protection device include sensing ambient sound using two or more microphones of the hearing protection device and sampling the ambient sound. The samples of the ambient sound may be used to determine ...