ALEXANDRIA, Va., March 3 -- United States Patent no. 12,565,157, issued on March 3, was assigned to ADLER PELZER HOLDING GMBH (Hagen, Germany).
"Absorptive sound insulation" was invented by Volkmar Schulze (Schierling, Germany) and Maurizio Tarello (Caluso, Italy).
According to the abstract* released by the U.S. Patent & Trademark Office: "An absorption sound insulation for motor vehicle interiors and luggage compartments with absorption/stiffening nonwovens or 3D absorbers is formed of partially or completely cellulose wool, and includes a wear layer, and an absorbent/stiffening nonwoven fabric laminated thereunder formed of rayon of solid individual phases having a multi-leg cross-sectional shape with at least three legs, in which the l...