Patents by Inventor Jacqueline L. Perisho

Jacqueline L. Perisho 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).

  • Use of polymers in alumina precipitation in the Bayer process of bauxite beneficiation
    Patent number: 4608237
    Abstract: The negative effects of sodium oxylate on the crystallization of aluminum trihydrate from Bayer process liquors may be eliminated or curtailed by adding an effective amount of a polyacrylic acid with a molecular weight about 1,000,000 and containing at least 50 mole percent acrylic acid monomer to pregnant Bayer process liquors.
    Type: Grant
    Filed: November 13, 1985
    Date of Patent: August 26, 1986
    Assignee: Nalco Chemical Company
    Inventors: William J. Roe, Jacqueline L. Perisho
  • Dewatering agent compositions for sulfide materials
    Patent number: 4568475
    Abstract: An improved dewatering agent for aqueous slurries of mineral concentrates comprising branched dodecylbenzene sulphonic acid used alone or in combination with sodium xylene sulphonate.
    Type: Grant
    Filed: January 22, 1985
    Date of Patent: February 4, 1986
    Assignee: Nalco Chemical Company
    Inventors: William J. Roe, Jacqueline L. Perisho
  • Dewatering agent compositions for sulfide materials
    Patent number: 4532049
    Abstract: An improved dewatering agent for aqueous slurries of mineral concentrates comprising branched dodecylbenzene sulphonic acid used alone or in combination with sodium xylene sulphonate.
    Type: Grant
    Filed: May 10, 1984
    Date of Patent: July 30, 1985
    Assignee: Nalco Chemical Company
    Inventors: William J. Roe, Jacqueline L. Perisho
  • Compositions for reducing the freeze-adherence of particulate minerals to the walls of transport bins and the like
    Patent number: 4410599
    Abstract: A side-release composition for use in facilitating the discharge of a frozen cargo of particulate mineral material comprises brine and a sufficient amount of polymeric ethylene oxide in the brine to form a gel upon exposure to temperatures of less than about 65.degree. F.
    Type: Grant
    Filed: March 8, 1982
    Date of Patent: October 18, 1983
    Assignee: Nalco Chemical Company
    Inventors: William J. Roe, Jacqueline L. Perisho