Patents by Inventor Antonio Vasconi

Antonio Vasconi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Boric oxide preparation method
    Patent number: 4908196
    Abstract: High-purity boric oxide which does not adhere to the reactor walls is obtained by:(a) gradually heat in boric acid, with the absence or substantial absence of fusion phenomena, at increasing temperature to a value not exceeding about 150.degree. C.; operating at below atmospheric pressure, to eliminate water until the boric acid has been completely or substantially completely converted into metaboric acid;(b) gradually heating the metaboric acid obtained in stage (a), with the absence or substantial absence of fusion phenomena, at increasing temperature to a value not exceeding about 400.degree. C., operating at below atmospheric pressure, to eliminate water until the metaboric acid has been completely or substantially completely converted into boric oxide.
    Type: Grant
    Filed: June 29, 1987
    Date of Patent: March 13, 1990
    Assignee: Societa Chimica Larderello S.p.A.
    Inventors: Antonio Vasconi, Paolo Mazzinghi