Patents Assigned to C.G.A. Compagnia Generale Alluminio S.p.A.
  • Method of making double layer sheet metal panels with ducts formed by inflation
    Patent number: 4563230
    Abstract: A method of making sheet metal panels from two layers between which ducts are formed by inflation, in which the inflation is effected by the use of a predetermined quantity of Freon in the liquid state, the subsequent evacuation of the Freon from the ducts being effected by evaporation.
    Type: Grant
    Filed: June 22, 1984
    Date of Patent: January 7, 1986
    Assignee: C.G.A. Compagnia Generale Alluminio S.p.A.
    Inventor: Luigi Nocivelli