Patents by Inventor Jeffrey W. Giles

Jeffrey W. Giles 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).

  • Methods of controlling the particle size of titanium dioxide produced by the chloride process
    Patent number: 7854917
    Abstract: A process for manufacturing titanium dioxide by the chloride process is provided. In one embodiment, a particle size control agent comprising an ionizing agent such as potassium chloride is introduced into the reaction zone of the oxidation reactor to control the particle size of the titanium dioxide. In a first aspect, the effectiveness of the particle size control agent in controlling the particle size of the titanium dioxide is improved by adding the particle size control agent to at least one of the reactant streams at a sufficient distance upstream of the oxidization reactor to allow the ionizing agent to efficiently ionize and the particle size control agent to thoroughly admix with the stream(s) prior to entering the reaction zone. In a second aspect, the particle size control agent comprises an ionizing agent and fumed silica. In another embodiment, the amount of alumina added to the reaction zone of the oxidization reactor is increased in order to control the particle size of the titanium dioxide.
    Type: Grant
    Filed: September 16, 2005
    Date of Patent: December 21, 2010
    Assignee: Tronox LLC
    Inventors: Harry E. Flynn, Robert O. Martin, Charles A. Natalie, Jeffrey W. Giles
  • Methods of Controlling the Particle of Titanium Dioxide Produced by the Chloride Process
    Publication number: 20080260627
    Abstract: A process for manufacturing titanium dioxide by the chloride process is provided. In one embodiment, a particle size control agent comprising an ionizing agent such as potassium chloride is introduced into the reaction zone of the oxidation reactor to control the particle size of the titanium dioxide. In a first aspect, the effectiveness of the particle size control agent in controlling the particle size of the titanium dioxide is improved by adding the particle size control agent to at least one of the reactant streams at a sufficient distance upstream of the oxidization reactor to allow the ionizing agent to efficiently ionize and the particle size control agent to thoroughly admix with the stream(s) prior to entering the reaction zone. In a second aspect, the particle size control agent comprises an ionizing agent and fumed silica. In another embodiment, the amount of alumina added to the reaction zone of the oxidization reactor is increased in order to control the particle size of the titanium dioxide.
    Type: Application
    Filed: September 16, 2005
    Publication date: October 23, 2008
    Applicant: TRONOX LLC
    Inventors: Harry E. Flynn, Robert O. Martin, Charles A. Natalie, Jeffrey W. Giles