ALEXANDRIA, Va., Oct. 27 -- United States Patent no. 12,773,817, issued on Oct. 27, was assigned to Airbus Operations SAS (Toulouse, France).
"Method for manufacturing an intermediate resistive membrane of an acoustic liner" was invented by Laurent Cazeaux (Toulouse, France), Laurent Caliman (Toulouse, France) and Nicolas Charton (Toulouse, France).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method for manufacturing an intermediate resistive membrane, called a "septum", with tubular guides for a DDOF (double degree of freedom) acoustic treatment panel. The method includes the membrane and the tubular guides being manufactured by the same operation of injecting a resin around a substrate placed between tw...