US Patent Issued to King Fahd University of Petroleum and Minerals on July 21 for "Noise cancelling device" (Saudi Arabia Inventors)

ALEXANDRIA, Va., July 21 -- United States Patent no. 12,688,841, issued on July 21, was assigned to King Fahd University of Petroleum and Minerals (Dhahran, Saudi Arabia).

"Noise cancelling device" was invented by Mamon Horoub (Dhahran, Saudi Arabia) and Ammar Alzaydi (Dhahran, Saudi Arabia).

According to the abstract* released by the U.S. Patent & Trademark Office: "A noise cancelling device includes first and second expansion chambers, both cylindrical and equipped with double-wall inlet and outlet extension pipes. Each expansion chamber includes two elements: the first elements includes first and second cylindrical portions with differing diameters, and the second element includes a third cylindrical portion connecting to a connecting ...