Patents by Inventor Peter F. Bagatto

Peter F. Bagatto 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).

  • Patent number: 5080803
    Abstract: A process and apparatus useful for decanting suspensions at temperatures at and above the atmospheric boiling point of the liquid of the suspension are disclosed.
    Type: Grant
    Filed: February 21, 1991
    Date of Patent: January 14, 1992
    Assignee: Alcan International Limited
    Inventors: Peter F. Bagatto, Bernard P. Dancose, Pierre C. Harrington, Gaston M. Jean, Marc A. Lepage
  • Patent number: 4830507
    Abstract: A method of and apparatus for the thickening of mud-like slurries produced during the course of industrial processes, e.g. the thickening of red muds produced during operation of the Bayer process for the production of alumina. The invention involves the step of feeding the slurry, a fluocculating agent and washing liquor to a deep thickening vessel having an underflow outlet for the thickened slurry and an overflow outlet for clarified washing liquor. The solids content of the slurry leaving the underflow outlet is increased and kept constant by the use of a stirrer having a number of generally vertical rod-like members rotated in the vessel above the underflow outlet. The stirrer enhances dewatering of the slurry and prevents undue build up of thick inactive mud which may block the outlet or cause fluctuations in the solids content of the thickened slurry.
    Type: Grant
    Filed: February 24, 1987
    Date of Patent: May 16, 1989
    Assignee: Alcan International Limited
    Inventors: Peter F. Bagatto, Donald L. Puxley