Patents by Inventor Peter V. Avotins

Peter V. Avotins 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).

  • Concentration of solids by flocculating in the Bayer process
    Patent number: 5853677
    Abstract: Processes for improving solids/liquids separation efficiency in the Bayer process are disclosed, wherein Bayer process streams are treated with calcium or magnesium salts, flocculated with carboxylic acid or salt group-containing polymers, and centrifuged.
    Type: Grant
    Filed: April 18, 1997
    Date of Patent: December 29, 1998
    Assignee: Cytec Technology Corp.
    Inventors: Peter V. Avotins, Roderick G. Ryles, Gregory Flieg
  • Compositions and method for foam control in Bayer process
    Patent number: 5837211
    Abstract: Methods of reducing foam in Bayer process liquor are provided, said methods comprising adding a composition to the Bayer process liquor that comprises a tri(alkoxy alkyl) phosphate and a hydroxyl group containing carrier.
    Type: Grant
    Filed: May 7, 1997
    Date of Patent: November 17, 1998
    Assignee: Cytec Technology Corp.
    Inventors: Samuel S. Wang, Dennis G. Downing, Peter V. Avotins
  • Use of hydroxamated polymers to alter bayer process scale
    Patent number: 5733459
    Abstract: The processing of bauxite in the Bayer Process results in the formation of titanaceous, siliceous, and other scale on equipment and apparatus such that a great deal of time and effort is spent in order to maintain the process at its height efficiency by reducing or eliminating the same. The scale is treated, reduced, altered, etc., according to the present invention by the use of hydroxamated polymers having weight average molecular weights ranging from about 1,000 to less than about 10,000.
    Type: Grant
    Filed: April 29, 1996
    Date of Patent: March 31, 1998
    Assignee: Cytec Technology Corp.
    Inventors: Alan S. Rothenberg, Peter V. Avotins, Robert Cole, Frank Kula
  • Use of hydroxamated polymers to alter Bayer Process scale
    Patent number: 5733460
    Abstract: The processing of bauxite in the Bayer Process results in the formation of titanaceous, siliceous, and other scale on equipment and apparatus such that a great deal of time and effort is spent in order to maintain the process at its height efficiency by reducing or eliminating the same. The scale is treated, reduced, altered, etc., according to the present invention by the use of hydroxamated polymers having weight average molecular weights of over about 10,000.
    Type: Grant
    Filed: April 29, 1996
    Date of Patent: March 31, 1998
    Assignee: Cytec Technology Corp.
    Inventors: Alan S. Rothenberg, Peter V. Avotins, Robert Cole, Frank Kula
  • Fiber bonded agglomerated ore materials
    Patent number: 5464465
    Abstract: Process for producing agglomerates, e.g., by pelletizing a particulate inorganic material for example an ore material, characterized by the addition to the agglomerated material of an organic fibrous material, especially a polyacrylonitrile fiber material, to bind and thereby enhance the properties of the agglomerates and recovery of metal values therefrom.
    Type: Grant
    Filed: September 2, 1994
    Date of Patent: November 7, 1995
    Assignee: Cytec Technology Corp.
    Inventors: Peter V. Avotins, Robert E. Evans
  • Process for producing fiber bonded agglomerated ore materials
    Patent number: 5372632
    Abstract: Process for producing agglomerates, e.g., by pelletizing a particulate inorganic material, for example, an ore material, characterized by the addition to the agglomerated material of an organic fibrous material, especially a polyacrylonitrile fiber material, to bind and thereby enhance the properties of the agglomerates and recovery of metal values therefrom.
    Type: Grant
    Filed: November 10, 1993
    Date of Patent: December 13, 1994
    Assignee: Cytec Technology Corp.
    Inventors: Peter V. Avotins, Robert E. Evans
  • Surfactants in dewatering sodium bicarbonate
    Patent number: 5096597
    Abstract: Improved filtration rates and decreased sodium chloride and moisture content in sodium bicarbonate filter cakes are obtained by including a filter aid containing a mono and/or dialkylester of sodium sulfosuccinate in the filter feed suspension.
    Type: Grant
    Filed: November 26, 1990
    Date of Patent: March 17, 1992
    Assignee: American Cyanamid Company
    Inventors: Richard D. Nichols, Peter V. Avotins, A. Grady Williams
  • High molecular weight carboxylic acids as collectors of mineral values from carbonaceous ores
    Patent number: 4585550
    Abstract: A process for the recovery of mineral values from carbonaceous ores is disclosed wherein the collector comprises a hydrocarbon acid or acidester having a molecular weight of at least about 500, an oil, and optionally, a sulfonated hydrocarbon compound.
    Type: Grant
    Filed: September 6, 1984
    Date of Patent: April 29, 1986
    Assignee: American Cyanamid Company
    Inventors: Peter V. Avotins, Donald P. Spitzer