Patents by Inventor Heather M. Wright

Heather M. Wright 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).

  • Polyblend polymeric composite and microcapsule toners, and a process for producing the same
    Patent number: 6322946
    Abstract: Toner particles may be produced using a semisuspension polymerization process, which includes: (a) providing a mixture of a partially polymerized monomer or comonomers near the onset of the gel-effect; (b) forming a suspension of the partially polymerized monomer or comonomers; and (c) suspension polymerizing the partially polymerized monomer or comonomers while slowly adding a second monomer or comonomers in a starved feed manner. The process may be used to produce toner particles having varied particle properties, and having a morphology ranging from core-shell and inverted core-shell microcapsules to pseudo core-shell microcapsules and to polyblend composites having a low molecular weight phase dispersed in a high molecular weight matrix.
    Type: Grant
    Filed: August 31, 1994
    Date of Patent: November 27, 2001
    Assignee: Xerox Corporation
    Inventors: Hadi K. Mahabadi, Michael F. Cunningham, Heather M. Wright