Patents by Inventor Denise Y. Wright

Denise Y. 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).

  • Patent number: 5575954
    Abstract: A process for the preparation of conductive polymeric particles with linear and crosslinked portions, which comprises mixing a monomer with at least one conductive filler, solvent, at least one polymerization initiator, and a chain transfer component; effecting solution polymerization by heating until from about 80 to about 100 weight percent of the monomer has been polymerized; drying the mixture by removing the solvent to yield an intimate blend of polymer with conductive filler; dispersing the aforementioned blend of polymer and conductive filler in at least one monomer with at least one polymerization initiator, a crosslinking agent and a chain transfer agent to form an organic phase; dispersing the resulting organic phase mixture in water containing a stabilizing component to obtain a suspension of particles with an average volume diameter of from about 0.05 to about 5 microns in water; polymerizing the resulting suspension by heating; and subsequently optionally washing and drying the polymeric product.
    Type: Grant
    Filed: October 23, 1995
    Date of Patent: November 19, 1996
    Assignee: Xerox Corporation
    Inventors: Hadi K. Mahabadi, Denise Y. Wright, Michael F. Cunningham, John A. Creatura
  • Patent number: 5487847
    Abstract: A process for the preparation of conductive polymeric particles with linear and crosslinked portions, which comprises mixing a monomer with at least one conductive filler, solvent, at least one polymerization initiator, and a chain transfer component; effecting solution polymerization by heating until from about 80 to about 100 weight percent of the monomer has been polymerized; drying the mixture by removing the solvent to yield an intimate blend of polymer with conductive filler; dispersing the aforementioned blend of polymer and conductive filler in at least one monomer with at least one polymerization initiator, a crosslinking agent and a chain transfer agent to form an organic phase; dispersing the resulting organic phase mixture in water containing a stabilizing component to obtain a suspension of particles with an average volume diameter of from about 0.05 to about 5 microns in water; polymerizing the resulting suspension by heating; and subsequently optionally washing and drying the polymeric product.
    Type: Grant
    Filed: April 11, 1994
    Date of Patent: January 30, 1996
    Assignee: Xerox Corporation
    Inventors: Hadi K. Mahabadi, Denise Y. Wright, Michael F. Cunningham, John A. Creatura
  • Patent number: 5330874
    Abstract: A process for the preparation of carrier particles which comprises the dry coating of a carrier or carrier cores with conductive submicron polymeric particles containing from about 1 to about 50 weight percent of conductive fillers, and wherein said conductive polymer particles are prepared by mixing at least one monomer with a polymerization initiator, a crosslinking component and a chain transfer component; effecting bulk polymerization until from about 5 to about 50 weight percent of the monomer has been polymerized; terminating polymerization by cooling the partially polymerized monomer; adding thereto from about 1 to about 50 weight percent of a conductive filler or conductive fillers, followed by mixing thereof; dispersing the aforementioned mixture of conductive filler or fillers, and partially polymerized product in water containing a stabilizing component to obtain a suspension of particles with an average diameter of from about 0.
    Type: Grant
    Filed: September 30, 1992
    Date of Patent: July 19, 1994
    Assignee: Xerox Corporation
    Inventors: Hadi K. Mahabadi, Denise Y. Wright, T. Hwee Ng, Angelo J. Barbetta, John A. Creatura
  • Patent number: 5288585
    Abstract: A process for the preparation of a toner composition which comprises (1) mixing a water soluble monomer or monomers, and an oil soluble monomer or monomers with polymerization initiators, a crosslinking component and a chain transfer component; (2) effecting bulk polymerization until from about 10 to about 40 weight percent of the water soluble and oil soluble monomer or monomers have been polymerized; (3) cooling the product obtained; (4) mixing with the aforesaid partially polymerized product components comprised of charge control agents, pigments, dyes, initiators, chain transfer agents and crosslinking agents to formulate a uniform organic phase; (5) dispersing the organic phase into from between about 2 to about 5 times its volume of water containing from between about 1 to about 5 weight percent of a stabilizing component to form a suspension with an average particle size of from between about 5 to about 25 microns and a particle size distribution of from about 1.
    Type: Grant
    Filed: April 23, 1992
    Date of Patent: February 22, 1994
    Assignee: Xerox Corporation
    Inventors: Hadi K. Mahabadi, Michael Cunningham, Denise Y. Wright
  • Patent number: 5236629
    Abstract: A process for the preparation of conductive submicron polymeric particles which comprises mixing at least one monomer with a polymerization initiator, a crosslinking component and a chain transfer component; effecting bulk polymerization until from about 10 to about 50 weight percent of the monomer has been polymerized; terminating polymerization by cooling the partially polymerized monomer; adding thereto from about 1 to about 50 weight percent of a conductive filler, or conductive fillers, followed by mixing thereof; dispersing the aforementioned mixture of conductive filler or fillers, and partially polymerized product in water containing a stabilizing component to obtain a suspension of particles with an average diameter of from about 0.05 to about 1 micron in water; polymerizing the resulting suspension by heating; and subsequently washing and drying the product.
    Type: Grant
    Filed: November 15, 1991
    Date of Patent: August 17, 1993
    Assignee: Xerox Corporation
    Inventors: Hadi K. Mahabadi, Denise Y. Wright, T. Hwee Ng, Angelo J. Barbetta, John A. Creatura