ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,432,491, issued on Sept. 30, was assigned to Massachusetts Institute of Technology (Cambridge, Mass.).

"Methods and apparatus for wideband acoustic communication" was invented by Reza Ghaffarivardavagh (Boston), Sayed Saad Afzal (Cambridge, Mass.), Osvy Rodriguez (Cambridge, Mass.) and Fadel Adib (Cambridge, Mass.).

According to the abstract* released by the U.S. Patent & Trademark Office: "An ultra-wide bandwidth acoustic transducer may include multiple layers, including an inner piezoelectric layer, a polymer coupling layer and an outer piezoelectric layer. The polymer layer may be located between, and may be bonded to, the inner and outer piezoelectric layers. The transducer may ...