Patents by Inventor Andrew C. Poulos

Andrew C. Poulos 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).

  • Process of phosphate ore beneficiation in the presence of residual organic polymeric flocculants
    Patent number: 4309282
    Abstract: Froth flotation of phosphate ore in the presence of residual organic polymeric flocculants is improved in recovery when a collector comprising a fatty acid derived from vegetable or mineral oils and a surface active agent is employed.
    Type: Grant
    Filed: April 14, 1980
    Date of Patent: January 5, 1982
    Assignee: American Cyanamid Company
    Inventors: Eugene L. Smith, Jr., Andrew C. Poulos, Richard E. Ellwanger
  • Settling out suspended solids in phosphoric acid product solutions
    Patent number: 4291005
    Abstract: For settling suspended solids in phosphoric acid product solutions, a copolymer of 95 mole percent ammonium acrylate monomer, 5% acrylamide monomer is shown to remove more solids than prior art flocculants when used in equivalent dosage, and to remove equivalent solids at much less dosage.
    Type: Grant
    Filed: April 23, 1979
    Date of Patent: September 22, 1981
    Assignee: American Cyanamid Company
    Inventors: Andrew C. Poulos, Michael J. Thibodeau
  • Selective flocculation for increased coal recovery by froth flotation
    Patent number: 4268379
    Abstract: The use of a selective cationic polymeric flocculant in conjunction with froth flotation of coal results in increased coal recovery.
    Type: Grant
    Filed: December 23, 1977
    Date of Patent: May 19, 1981
    Assignee: American Cyanamid Company
    Inventors: Andrew C. Poulos, John D. Hightower