US Patent Issued to Trustees of Boston University on July 8 for "Air-transparent selective sound silencer using ultra-open metamaterial" (Massachusetts Inventors)

ALEXANDRIA, Va., July 9 -- United States Patent no. 12,352,190, issued on July 8, was assigned to Trustees of Boston University (Boston).

"Air-transparent selective sound silencer using ultra-open metamaterial" was invented by Xin Zhang (Medford, Mass.), Reza Ghaffarivardavagh (Boston) and Stephan Anderson (Boston).

According to the abstract* released by the U.S. Patent & Trademark Office: "A bilayler metamaterial silencer allows substantial fluid through the apparatus, while mitigating the propagation of sound through the apparatus, and while providing a form factor that is significantly more compact than previously-known devices. Moreover, illustrative embodiments allow a designer to specify one or both of the frequency or frequencies a...