Patents by Inventor Allison G. Thomas

Allison G. Thomas 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).

  • Patent number: 5536613
    Abstract: A process for the preparation of pigmented toner compositions comprising: a) forming at a first temperature, a first melt mixture comprised of a partially crosslinked thermoplastic resin, pigment, optionally a wax, and optional additives, wherein the partially crosslinked thermoplastic resin is comprised of a mixture of crosslinked resin macrogel particles, crosslinked resin microgel particles, and uncrosslinked resin; and b) melt mixing at a second temperature, the first melt mixture to form a second mixture, wherein the macrogel particles are partially converted into microgel particles, and wherein the second temperature is less than or equal to the first temperature.
    Type: Grant
    Filed: February 23, 1995
    Date of Patent: July 16, 1996
    Assignee: Xerox Corporation
    Inventors: Hui Chang, Joo T. Chung, Joseph L. Leonardo, Enno E. Agur, John J. Ianni, Allison G. Thomas, Linda A. Flannery