Patents by Inventor Sharon D. Fritts

Sharon D. Fritts 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).

  • Removing anions from alkaline silicate solutions
    Patent number: 6063344
    Abstract: A method of removing HMO.sub.2.sup.- anions from an aqueous silicate solution comprising contacting the solution with a cationic ion exchange resin, where M is manganese, zinc, copper, nickel, or a mixture thereof. The method is particularly applicable to solutions of sodium silicate or potassium silicate.
    Type: Grant
    Filed: June 1, 1999
    Date of Patent: May 16, 2000
    Assignee: Occidental Chemical Corporation
    Inventors: Sharon D. Fritts, Walter Opalinski, Joseph Guzzetta
  • Method of recovering chlorine from a gas mixture
    Patent number: 5985226
    Abstract: Disclosed is a process for separating chlorine gas from a mixture of gases. The mixture of gases is cooled to a temperature less than 0.degree. C. and is contacted with ice, which results in the formation of chlorine hydrate on the ice. The ice is separated from the mixture of gases and is heated or the operating pressure reduced to release chlorine.
    Type: Grant
    Filed: January 7, 1998
    Date of Patent: November 16, 1999
    Assignee: Occidental Chemcial Corporation
    Inventors: Robert L. Zeller, Sharon D. Fritts, David L. Johnson, Kenneth J. Carlson, Paul J. Orosz, Ronald B. Kaplin
  • Method of denuding sodium mercury amalgam and producing sodium alcoholates
    Patent number: 5262133
    Abstract: Disclosed is a method of denuding a sodium-mercury amalgam to recover mercury therefrom and produce a sodium alcoholate. The amalgam is reacted with a C.sub.1 to C.sub.4 alcohol in the presence of a catalyst selected from the group consisting of tungsten carbide, iron treated high density carbon, iridium, ruthenium, and mixtures thereof. The resulting sodium alcoholate is separated from the mercury.
    Type: Grant
    Filed: January 21, 1992
    Date of Patent: November 16, 1993
    Assignee: Occidental Chemical Corporation
    Inventors: Robert G. Adams, Tilak V. Bommaraju, Sharon D. Fritts
  • Fluoride removal from aqueous streams
    Patent number: 5215632
    Abstract: Disclosed is a method of removing fluoride and sulfate ions from an aqueous stream by adding calcium chloride and a source of phosphate ion to the stream to form a first precipitate of calcium sulfate and a compound of calcium, fluoride, and phosphate. The precipitate is separated from the aqueous stream and a source of carbonate ion is added to the stream to form a second precipitate which contains fluoride and calcium. The second precipitate is then separated from the aqueous stream.
    Type: Grant
    Filed: April 30, 1990
    Date of Patent: June 1, 1993
    Assignee: Occidental Chemical Corporation
    Inventors: Sharon D. Fritts, Tilak V. Bommaraju, Walter W. Ruthel
  • Regeneration of cationic exchange resins
    Patent number: 5082567
    Abstract: Disclosed is a method of regenerating a cationic exchange resin that has been exposed to chlorate ion. The resin is treated with an acidic regenerating solution that contains sulfite ion in an amount at least stoichiometric with the amount of chlorate remaining on the resin. The resin can either be rinsed with water first and then contacted with an acidic regenerating solution containing sulfite, or the resin can be washed with acidic water containing sulfite ion and then treated with an acidic regenerating solution.
    Type: Grant
    Filed: November 8, 1990
    Date of Patent: January 21, 1992
    Assignee: Occidental Chemical Corporation
    Inventors: Sharon D. Fritts, Tilak V. Bommaraju