Patents by Inventor Thomas E. Enright
Thomas E. Enright 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).
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Publication number: 20040018441Abstract: A process including:Type: ApplicationFiled: July 29, 2002Publication date: January 29, 2004Applicant: Xerox CorporationInventors: Milan Maric, Alan E.J. Toth, Thomas E. Enright, Marko D. Saban
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Patent number: 6660444Abstract: Carrier comprised of a core, a number of the pores thereof containing a polymer, and thereover a coating.Type: GrantFiled: January 10, 2003Date of Patent: December 9, 2003Assignee: Xerox CorporationInventors: Hadi K. Mahabadi, Enno E. Agur, Thomas E. Enright, John A. Creatura, Mary L. Ott, K. Derek Henderson, Paul J. Gerroir
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Publication number: 20030104303Abstract: Carrier comprised of a core, a number of the pores thereof containing a polymer, and thereover a coating.Type: ApplicationFiled: January 10, 2003Publication date: June 5, 2003Applicant: Xerox CorporationInventors: Hadi K. Mahabadi, Enno E. Agur, Thomas E. Enright, John A. Creatura, Mary L. Ott, K. Derek Henderson, Paul J. Gerroir
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Patent number: 6528225Abstract: Carrier comprised of a core, a number of the pores thereof containing a polymer, and thereover a coating.Type: GrantFiled: March 9, 1998Date of Patent: March 4, 2003Assignee: Xerox CorporationInventors: Hadi K. Mahabadi, Enno E. Agur, Thomas E. Enright, John A. Creatura, Mary L. Ott, K. Derek Henderson, Paul J. Gerroir
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Patent number: 6399701Abstract: Submicron sized particles of poly(methyl methacrylate) are prepared by a surfactant-free semi-continuous emulsion polymerization process that involves (i) preparing an aqueous phase containing a free radical initiator in water by heating and stirring, (ii) preparing a monomer composition containing at least 80% by weight methyl methacrylate and 1 to 10% by weight of a crosslinking agent, (iii) adding the monomer composition to the aqueous phase to initiate emulsion polymerization of the monomer composition, the adding being done at a rate such that from 0.05% to 5% by weight of the total weight of the monomer composition is added per minute, (iv) continuing heating and stirring following completion of the adding of the monomer composition for an amount of time, and (v) drying and recovering the submicron sized particles of poly(methyl methacrylate). The submicron sized particles of poly(methyl methacrylate are used in forming a coating of carrier particles for a two-component developer composition.Type: GrantFiled: May 15, 2000Date of Patent: June 4, 2002Assignee: Xerox CorporationInventors: Thomas E. Enright, Anthony James Paine, George Liebermann, Kenneth Derek Henderson, Scott M. Silence, Bernard A. Kelly
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Patent number: 6391509Abstract: A carrier containing a core, a polymer coating or mixtures of polymers thereover, and wherein the coating polymer or mixtures contains a conductive polymer.Type: GrantFiled: August 17, 2000Date of Patent: May 21, 2002Assignee: Xerox CorporationInventors: Stephan V. Drappel, George Liebermann, Richard P. N. Veregin, Thomas E. Enright, Scott M. Silence, Michael J. Duggan, Paula J. MacLeod
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Patent number: 6268100Abstract: A carrier comprised of a carrier core, optional polymer coating, and fluorosilanated pigment coating.Type: GrantFiled: September 18, 2000Date of Patent: July 31, 2001Assignee: Xerox CorporationInventors: Michael F. Cunningham, Richard P. N. Veregin, Carl P. Tripp, Thomas E. Enright, Maria V. McDougall, John A. Creatura
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Patent number: 6180311Abstract: A carrier comprised of a carrier core, optional polymer coating, and fluorosilanated pigment coating.Type: GrantFiled: September 19, 1994Date of Patent: January 30, 2001Assignee: Xerox CorporationInventors: Michael F. Cunningham, Richard P. N. Veregin, Carl P. Tripp, Thomas E. Enright, Maria V. McDougall, John A. Creatura
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Patent number: 6132918Abstract: A process for the preparation of polymers which comprises generating a solution of water and polyvinyl alcohol with acetate groups; adding thereto a mixture of an alkali metal iodide and iodine; adding thereto initiator, and optional crosslinking agent; adding monomer, a mixture of monomers, or a monomer/polymer mixture; homogenizing, and polymerizing; and wherein there is formed an iodide/iodine/acetate complex prior to said polymerizing.Type: GrantFiled: March 29, 2000Date of Patent: October 17, 2000Assignee: Xerox CorporationInventors: Thomas E. Enright, George Liebermann, Scott M. Silence, K. Derek Henderson, Hadi K. Mahabadi, Bernard A. Kelly
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Patent number: 6093770Abstract: A process for the preparation of polymers which comprises generating a solution of water and polyvinyl alcohol with acetate groups; adding thereto a mixture of an alkali metal iodide and iodine; adding thereto initiator, and optional crosslinking agent; adding monomer, a mixture of monomers, or a monomer/polymer mixture; homogenizing, and polymerizing; and wherein there is formed an iodide/iodine/acetate complex prior to said polymerizing.Type: GrantFiled: February 2, 1998Date of Patent: July 25, 2000Assignee: Xerox CorporationInventors: Thomas E. Enright, George Liebermann, Scott M. Silence, K. Derek Henderson, Hadi K. Mahabadi, Bernard A. Kelly
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Patent number: 6051353Abstract: A carrier comprised of a core and thereover a polymer generated from the reaction of a component containing amine groups and a component containing epoxy groups.Type: GrantFiled: September 7, 1999Date of Patent: April 18, 2000Assignee: Xerox CorporationInventors: Thomas R. Hoffend, Robert D. Bayley, Carol A. Fox, John G. VanDusen, Scott M. Silence, K. Derek Henderson, Charles H. Honeyman, Paula J. MacLeod, Paul F. Smith, Thomas E. Enright
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Patent number: 5998076Abstract: Carrier comprised of a hard magnetic core, the pores thereof containing polymer, and thereover s coating.Type: GrantFiled: March 9, 1998Date of Patent: December 7, 1999Assignee: Xerox CorporationInventors: Hadi K. Mahabadi, Enno E. Agur, Thomas E. Enright, John A. Creatura, Mary L. Ott, K. Derek Henderson, Paul J. Gerroir
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Patent number: 5958302Abstract: 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: GrantFiled: June 19, 1998Date of Patent: September 28, 1999Assignee: Xerox CorporationInventors: Michael F. Cunningham, George Liebermann, Hadi K. Mahabadi, Daniel M. McNeil, Michael S. Hawkins, Thomas E. Enright, Aron J. Cogswell
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Patent number: 5935750Abstract: A carrier comprised of a core and a polymer coating containing a quaternary ammonium salt functionality.Type: GrantFiled: August 26, 1998Date of Patent: August 10, 1999Assignee: Xerox CorporationInventors: Angelo J. Barbetta, Robert D. Bayley, Carol A. Fox, Thomas R. Hoffend, Scott M. Silence, K. Derek Henderson, Paula J. MacLeod, Charles H. Honeyman, Thomas E. Enright
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Patent number: 5883176Abstract: Conductive polymeric particles can be formed by mixing a monomer, carbon black and a block copolymer, wherein the block copolymer contains an A block that is miscible with said monomer and a B block that anchors to the surface of the carbon black, such as polystyrene or a derivative of polystyrene. A polymerization initiator is added to the mixture and bulk polymerization is effected until about 5 to about 30 weight percent of the monomer has been polymerized. This partially polymerized product is then dispersed in water and further polymerized.Type: GrantFiled: May 27, 1997Date of Patent: March 16, 1999Assignee: Xerox CorporationInventors: Paul J. Gerroir, Nancy Ann Listigovers, Michael F. Cunningham, Thomas E. Enright, John A. Creatura
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Patent number: 5807506Abstract: 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: GrantFiled: April 1, 1997Date of Patent: September 15, 1998Assignee: Xerox CorporationInventors: Michael F. Cunningham, George Liebermann, Hadi K. Mahabadi, Daniel M. McNeil, Michael S. Hawkins, Thomas E. Enright, Aron J. Cogswell
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Patent number: 5747577Abstract: Conductive polymeric particles can be formed by mixing a monomer, carbon black and a block copolymer, wherein the block copolymer contains an A block that is miscible with said monomer and a B block that anchors to the surface of the carbon black, such as polystyrene or a derivative of polystyrene. A polymerization initiator is added to the mixture and bulk polymerization is effected until about 5 to about 30 weight percent of the monomer has been polymerized. This partially polymerized product is then dispersed in water and further polymerized.Type: GrantFiled: December 27, 1995Date of Patent: May 5, 1998Assignee: Xerox CorporationInventors: Paul J. Gerroir, Nancy Ann Listigovers, Michael F. Cunningham, Thomas E. Enright, John A. Creatura
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Patent number: 5529719Abstract: A process for the preparation of polymer which comprises effecting a bulk polymerization of a mixture containing at least one monomer, a chain transfer agent, a crosslinking agent, a free radical redox polymerization initiator pair, and at least one additional free radical initiator until from about 4 to about 50 weight percent of the monomer has been polymerized and one or both components in the redox initiator pair has been consumed; dispersing with a high shear mixer the aforementioned partially polymerized mixture in water containing a stabilizing component selected from the group consisting of nonionic and ionic water soluble polymeric stabilizers to obtain a suspension of particles; polymerizing the resulting suspension; and optionally subsequently insulating, washing and drying the polymer product.Type: GrantFiled: March 27, 1995Date of Patent: June 25, 1996Assignee: Xerox CorporationInventors: Michael F. Cunningham, Thomas E. Enright, Hadi K. Mahabadi
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Patent number: 5484675Abstract: A toner composition comprised of resin and pigment particles where the pigment particles are treated with a fluorosilane polymer.Type: GrantFiled: September 19, 1994Date of Patent: January 16, 1996Assignee: Xerox CorporationInventors: Carl P. Tripp, Richard P. N. Veregin, Michael F. Cunningham, Thomas E. Enright, Maria V. McDougall
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Patent number: 5447791Abstract: Submicron to micron sized conductive particles, on the order of 0.05 to 5 micron in average particle diameter, are produced using a semisuspension polymerization process in which the aqueous phase of the suspension contains an inorganic salt such as potassium iodide. The inorganic salt inhibits the formation of polymer particles that do not contain conductive filler so as to be non-conductive. The process also allows for conductive filler to be added at the start of the process. Powder coatings made from the submicron sized conductive particles have a high and uniform conductivity.Type: GrantFiled: October 26, 1994Date of Patent: September 5, 1995Assignee: Xerox CorporationInventors: Michael F. Cunningham, Thomas E. Enright, Hadi K. Mahabadi, John G. Van Dusen