Patents by Inventor Patricia Ann Burns

Patricia Ann Burns 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).

  • Toner processes
    Patent number: 7413842
    Abstract: A toner process comprising aggregating or coagulating a latex emulsion comprising a resin, a colorant and wax particles using an amount of polymetal ion coagulant to provide core particles; heating the core particles to provide micron size aggregates; optionally adding a second resin emulsion; adding a sequestering or complexing component and a base to remove the polymetal ion in a controlled manner; further heating the mixture to provide toner particles; and optionally, isolating the toner particles.
    Type: Grant
    Filed: August 22, 2005
    Date of Patent: August 19, 2008
    Assignee: Xerox Corporation
    Inventors: Daryl Vanbesien, David J. Sanders, Raj D. Patel, Christine D. Anderson, Patricia Ann Burns, Nam-Suk Ro
  • Toner particles and methods of preparing the same
    Patent number: 7320851
    Abstract: Toner particles comprise resin, wax and optionally colorants, and the wax is substantially excluded from the interior core of the toner particles. Processes for preparing such toner particles comprise providing an aqueous dispersion of resin particles and optionally colorants, mixing the aqueous dispersion in presence of a coagulant, aggregating to form particles, coalescing to form fused particles, and removing the fused particles from the aqueous dispersion. Wax dispersions can be added either after mixing or during aggregation, so that wax is excluded from the core of the toner particles.
    Type: Grant
    Filed: January 13, 2005
    Date of Patent: January 22, 2008
    Assignee: Xerox Corporation
    Inventors: Ke Zhou, Enno Eric Agur, Wafa Faisul Bashir, Maria N. V. McDougall, Emily Louise Moore, Shigang Steven Qiu, Vladislav Skorokhod, Daryl W. Vanbesien, Edward Graham Zwartz, Joseph August Bartel, Patricia Ann Burns, T. Brian McAneney, Richard P. N. Veregin, Paul Joseph Gerroir
  • Emulsion/aggregation polymeric microspheres for biomedical applications and methods of making same
    Patent number: 7276254
    Abstract: A method of forming polymeric microspheres for biomedical applications includes forming polymeric microspheres by an emulsion/aggregation process from a precursor monomer species, and treating the polymeric microspheres to attach a biomedical functional material to the polymeric microspheres, where the polymeric microspheres have an average particle diameter of from about 1 to about 15 microns with a narrow particle geometric size distribution. The biomedical functional material may be, for example, a radioactive material, a radioactive precursor material, a bioactive agent, or a ligand.
    Type: Grant
    Filed: May 7, 2002
    Date of Patent: October 2, 2007
    Assignee: Xerox Corporation
    Inventors: Patricia Ann Burns, Raj D. Patel, Hadi Khan Mahabadi, Ronald F. Ziolo
  • Emulsion/aggregation polymeric microspheres for biomedical applications and methods of making same
    Publication number: 20030211035
    Abstract: A method of forming polymeric microspheres for biomedical applications includes forming polymeric microspheres by an emulsion/aggregation process from a precursor monomer species, and treating the polymeric microspheres to attach a biomedical functional material to the polymeric microspheres, where the polymeric microspheres have an average particle diameter of from about 1 to about 15 microns with a narrow particle geometric size distribution. The biomedical functional material may be, for example, a radioactive material, a radioactive precursor material, a bioactive agent, or a ligand.
    Type: Application
    Filed: May 7, 2002
    Publication date: November 13, 2003
    Inventors: Patricia Ann Burns, Raj D. Patel, Hadi Khan Mahabadi, Ronald F. Ziolo