Patents by Inventor Aron J. Cogswell

Aron J. Cogswell 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).

  • Conductive polymers
    Patent number: 5958302
    Abstract: A process for the preparation of conductive polymers which comprises (a) mixing at least one monomer with at least one conductive component, solvent, at least one polymerization initiator, and an optional chain transfer component; (b) effecting solution polymerization by heating; (c) removing said solvent by azeotropic distillation in an aqueous phase to generate a mixture of polymer and conductive component; (d) drying and grinding the resulting mixture; thereafter dissolving the product resulting in at least one monomer, at least one initiator, and at least one crosslinking component, and an optional chain transfer agent to form an organic phase; (e) mixing said organic phase with a second aqueous phase comprised of water, stabilizer, and an alkali halide; (f) polymerizing the resulting suspension by heating; and (g) subsequently optionally washing and drying the polymeric product, and which product is comprised of polymer and conductive component dispersed therein.
    Type: Grant
    Filed: June 19, 1998
    Date of Patent: September 28, 1999
    Assignee: Xerox Corporation
    Inventors: Michael F. Cunningham, George Liebermann, Hadi K. Mahabadi, Daniel M. McNeil, Michael S. Hawkins, Thomas E. Enright, Aron J. Cogswell
  • Conductive polymers
    Patent number: 5807506
    Abstract: A process for the preparation of conductive polymers which comprises (a) mixing at least one monomer with at least one conductive component, solvent, at least one polymerization initiator, and an optional chain transfer component; (b) effecting solution polymerization by heating; (c) removing said solvent by azeotropic distillation in an aqueous phase to generate a mixture of polymer and conductive component; (d) drying and grinding the resulting mixture; thereafter dissolving the product resulting in at least one monomer, at least one initiator, and at least one crosslinking component, and an optional chain transfer agent to form an organic phase; (e) mixing said organic phase with a second aqueous phase comprised of water, stabilizer, and an alkali halide; (f) polymerizing the resulting suspension by heating; and (g) subsequently optionally washing and drying the polymeric product, and which product is comprised of polymer and conductive component dispersed therein.
    Type: Grant
    Filed: April 1, 1997
    Date of Patent: September 15, 1998
    Assignee: Xerox Corporation
    Inventors: Michael F. Cunningham, George Liebermann, Hadi K. Mahabadi, Daniel M. McNeil, Michael S. Hawkins, Thomas E. Enright, Aron J. Cogswell
  • Conductive developer compositions with coated carrier particles
    Patent number: 5595851
    Abstract: A conductive carrier composition comprised of a core with a coating thereover comprised of a mixture of first and second polymers, and wherein the first polymer contains a conductive component, and the second polymer contains a metal oxide.
    Type: Grant
    Filed: June 21, 1995
    Date of Patent: January 21, 1997
    Assignee: Xerox Corporation
    Inventors: John A. Creatura, Catherine A. McKnight, Michael J. Duggan, Aron J. Cogswell, Michael F. Cunningham, Thomas C. Dombroski