US Patent Issued to O.R.V. MANUFACTURING on April 7 for "Sound-absorbing material and method of making such a sound-absorbing material" (Italian Inventors)

ALEXANDRIA, Va., April 7 -- United States Patent no. 12,597,407, issued on April 7, was assigned to O.R.V. MANUFACTURING S.P.A. (Carmignano di Brenta, Italy).

"Sound-absorbing material and method of making such a sound-absorbing material" was invented by Francesca Beltrame (Carmignano di Brenta, Italy), Marina Bastarolo (Carmignano di Brenta, Italy) and Arianna Alfonsi (Carmignano di Brenta, Italy).

According to the abstract* released by the U.S. Patent & Trademark Office: "Sound-absorbing material includes a monolithic main layer which is made of non-woven fiber fabric and has two opposite faces delimiting the thickness of the monolithic main layer. The monolithic main layer has a density gradient in the direction of its thickness. The m...