Patents by Inventor James R. Combes
James R. Combes 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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Patent number: 8329782Abstract: A process for reducing fluorosurfactant content of a stabilized fluorosurfactant-containing aqueous fluoropolymer dispersion comprising contacting the stabilized fluorosurfactant-containing aqueous fluoropolymer dispersion with an anion exchange resin comprising a polymer and quaternary ammonium functional groups to reduce fluorosurfactant content, the functional groups being resistant to degradation which releases trialkylamines. The anion exchange resin is separated from the dispersion after the fluorosurfactant content has been reduced.Type: GrantFiled: December 18, 2009Date of Patent: December 11, 2012Assignee: E I du Pont de Nemours and CompanyInventors: James R. Combes, David William Johnson, Stephen Thomas Breske
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Patent number: 8227526Abstract: A process for reducing fluorosurfactant content of a stabilized fluorosurfactant-containing aqueous fluoropolymer dispersion comprising contacting the stabilized fluorosurfactant-containing aqueous fluoropolymer dispersion with an anion exchange resin comprising a polymer and quaternary ammonium functional groups to reduce fluorosurfactant content, the functional groups being resistant to degradation which releases trialkylamines. The anion exchange resin is separated from the dispersion after the fluorosurfactant content has been reduced.Type: GrantFiled: December 18, 2009Date of Patent: July 24, 2012Assignee: E I du Pont de Nemours and CompanyInventors: James R. Combes, David William Johnson, Stephen Thomas Breske
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Publication number: 20100093894Abstract: A process for reducing fluorosurfactant content of a stabilized fluorosurfactant-containing aqueous fluoropolymer dispersion comprising contacting the stabilized fluorosurfactant-containing aqueous fluoropolymer dispersion with an anion exchange resin comprising a polymer and quaternary ammonium functional groups to reduce fluorosurfactant content, the functional groups being resistant to degradation which releases trialkylamines. The anion exchange resin is separated from the dispersion after the fluorosurfactant content has been reduced.Type: ApplicationFiled: December 18, 2009Publication date: April 15, 2010Applicant: E. I. DU PONT DE NEMOURS AND COMPANYInventors: James R. Combes, David William Johnson, Stephen Thomas Breske
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Publication number: 20100093893Abstract: A process for reducing fluorosurfactant content of a stabilized fluorosurfactant-containing aqueous fluoropolymer dispersion comprising contacting the stabilized fluorosurfactant-containing aqueous fluoropolymer dispersion with an anion exchange resin comprising a polymer and quaternary ammonium functional groups to reduce fluorosurfactant content, the functional groups being resistant to degradation which releases trialkylamines. The anion exchange resin is separated from the dispersion after the fluorosurfactant content has been reduced.Type: ApplicationFiled: December 18, 2009Publication date: April 15, 2010Applicant: E. I. DU PONT DE NEMOURS AND COMPANYInventors: James R. Combes, David William Johnson, Stephen Thomas Breske
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Patent number: 7666927Abstract: A process for reducing fluorosurfactant content of a stabilized fluorosurfactant-containing aqueous fluoropolymer dispersion comprising contacting the stabilized fluorosurfactant-containing aqueous fluoropolymer dispersion with an anion exchange resin comprising a polymer and quaternary ammonium functional groups to reduce fluorosurfactant content, the functional groups being resistant to degradation which releases trialkylamines. The anion exchange resin is separated from the dispersion after the fluorosurfactant content has been reduced.Type: GrantFiled: December 2, 2005Date of Patent: February 23, 2010Assignee: E.I. du Pont de Nemours and CompanyInventors: James R. Combes, David William Johnson, Stephen Thomas Breske
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Publication number: 20040152007Abstract: Disclosed is a toner comprising particles of a polyester resin, an optional colorant, and polypyrrole, wherein said toner particles are prepared by an emulsion aggregation process. Another embodiment of the present invention is directed to a ballistic aerosol marking process using the toner.Type: ApplicationFiled: January 21, 2004Publication date: August 5, 2004Applicant: Xerox Corporation.Inventors: James R. Combes, Karen A. Moffat, Maria N.V. McDougall
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Patent number: 6743559Abstract: Disclosed is a toner comprising particles of a polyester resin, an optional colorant, and polypyrrole, wherein said toner particles are prepared by an emulsion aggregation process. Another embodiment of the present invention is directed to a process which comprises (a) generating an electrostatic latent image on an imaging member, and (b) developing the latent image by contacting the imaging member with charged toner particles comprising a polyester resin, an optional colorant, and polypyrrole, wherein said toner particles are prepared by an emulsion aggregation process.Type: GrantFiled: January 23, 2003Date of Patent: June 1, 2004Assignee: Xerox CorporationInventors: James R. Combes, Karen A. Moffat, Maria N. V. McDougall
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Patent number: 6719399Abstract: Disclosed is a process for depositing marking material onto a substrate which comprises (a) providing a propellant to a printhead, said printhead having defined therein at least one channel, each channel having an inner surface and an exit orifice with a width no larger than about 250 microns through which the propellant can flow, said propellant flowing through each channel, thereby forming a propellant stream having kinetic energy, each channel directing the propellant stream toward the substrate, the inner surface of each channel having thereon a conductive polymer coating; and (b) controllably introducing a particulate marking material into the propellant stream in each channel, wherein the kinetic energy of the propellant stream causes the particulate marking material to impact the substrate.Type: GrantFiled: May 16, 2003Date of Patent: April 13, 2004Assignee: Xerox CorporationInventors: Karen A. Moffat, Jaan Noolandi, Armin R. Volkel, Maria N. V. McDougall, David N. MacKinnon, James R. Combes, Edward G. Zwartz
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Patent number: 6673501Abstract: Disclosed is a toner comprising particles of a polyester resin, an optional colorant, and polypyrrole, wherein said toner particles are prepared by an emulsion aggregation process. Another embodiment of the present invention is directed to a process which comprises (a) generating an electrostatic latent image on an imaging member, and (b) developing the latent image by contacting the imaging member with charged toner particles comprising a polyester resin, an optional colorant, and polypyrrole, wherein said toner particles are prepared by an emulsion aggregation process.Type: GrantFiled: November 28, 2000Date of Patent: January 6, 2004Assignee: Xerox CorporationInventors: James R. Combes, Karen A. Moffat, Maria N. V. McDougall
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Publication number: 20030202032Abstract: Disclosed is a process for depositing marking material onto a substrate which comprises (a) providing a propellant to a printhead, said printhead having defined therein at least one channel, each channel having an inner surface and an exit orifice with a width no larger than about 250 microns through which the propellant can flow, said propellant flowing through each channel, thereby forming a propellant stream having kinetic energy, each channel directing the propellant stream toward the substrate, the inner surface of each channel having thereon a conductive polymer coating; and (b) controllably introducing a particulate marking material into the propellant stream in each channel, wherein the kinetic energy of the propellant stream causes the particulate marking material to impact the substrate.Type: ApplicationFiled: May 16, 2003Publication date: October 30, 2003Applicant: Xerox CorporationInventors: Karen A. Moffat, Jaan Noolandi, Armin R. Volkel, Maria N. V. McDougall, David N. MacKinnon, James R. Combes, Edward G. Zwartz
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Publication number: 20030175609Abstract: Disclosed is a toner comprising particles of a polyester resin, an optional colorant, and polypyrrole, wherein said toner particles are prepared by an emulsion aggregation process. Another embodiment of the present invention is directed to a process which comprises (a) generating an electrostatic latent image on an imaging member, and (b) developing the latent image by contacting the imaging member with charged toner particles comprising a polyester resin, an optional colorant, and polypyrrole, wherein said toner particles are prepared by an emulsion aggregation process.Type: ApplicationFiled: January 23, 2003Publication date: September 18, 2003Applicant: Xerox CorporationInventors: James R. Combes, Karen A. Moffat, Maria N.V. McDougall
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Patent number: 6610452Abstract: A toner composition includes a binder, a colorant, and surface-treated sol-gel metal oxide particles surface-treated with a treatment agent.Type: GrantFiled: January 16, 2002Date of Patent: August 26, 2003Assignee: Xerox CorporationInventors: James R. Combes, Richard P. N. Veregin, Mary L. McStravick, Ronald J. Koch, Anita C. Van Laeken, Bing R. Hsieh
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Patent number: 6598954Abstract: Disclosed is an apparatus for depositing a particulate marking material onto a substrate, comprising (a) a printhead having defined therein at least one channel, each channel having an inner surface and an exit orifice with a width no larger than about 250 microns, the inner surface of each channel having thereon a conductive polymer coating; (b) a propellant source connected to each channel such that propellant provided by the propellant source can flow through each channel to form propellant streams therein, the propellant streams having kinetic energy, each channel directing the propellant stream through the exit orifice toward the substrate; and (c) a marking material reservoir having an inner surface, the inner surface having thereon the conductive polymer coating, the reservoir containing particles of a particulate marking material, the reservoir being communicatively connected to each channel such that the particulate marking material from the reservoir can be controllably introduced into the propellanType: GrantFiled: January 9, 2002Date of Patent: July 29, 2003Assignee: Xerox CorporationInventors: Karen A. Moffat, Jaan Noolandi, Armin R. Volkel, Maria N. V. McDougall, David N. MacKinnon, James R. Combes, Edward G. Zwartz
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Publication number: 20030134217Abstract: A toner composition includes a binder, a colorant, and surface-treated sol-gel metal oxide particles surface-treated with a treatment agent.Type: ApplicationFiled: January 16, 2002Publication date: July 17, 2003Inventors: James R. Combes, Richard P. N. Veregin, Mary L. McStravick, Ronald J. Koch, Anita C. Van Laeken, Bing R. Hsieh
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Patent number: 6589702Abstract: Disclosed is a toner comprising particles of a resin and an optional colorant, said toner particles having coated thereon a polypyrrole. Another embodiment of the present invention is directed to a process which comprises (a) generating an electrostatic latent image on an imaging member, and (b) developing the latent image by contacting the imaging member with charged toner particles comprising a resin and an optional colorant, said toner particles having coated thereon a polypyrrole.Type: GrantFiled: September 3, 2002Date of Patent: July 8, 2003Assignee: Xerox CorporationInventors: Karen A. Moffat, Rina Carlini, Maria N. V. McDougall, Dan A. Hays, Jack T. LeStrange, James R. Combes
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Patent number: 6529313Abstract: An electrophoretic display liquid composition for use in an electrophoretic display device that has a multiplicity of individual reservoirs, each containing the liquid, contains one or at least two sets of particles dispersed in a transparent and/or colored liquid system. The at least two sets of particles exhibit different, contrasting color and different charging properties from each other, while in the one particle system, the particles exhibit a different, contrasting color from the colored liquid. In all embodiments, at least one of the sets of particles are particles with adjustable morphology made from emulsion/aggregation process. The morphology of the particles is controlled to be from grape, cauliflower, raspberry, or potato up to substantially perfect spheres.Type: GrantFiled: January 16, 2002Date of Patent: March 4, 2003Assignee: Xerox CorporationInventors: Pinyen Lin, David H. Pan, Chieh-Min Cheng, Adam Bush, James R. Combes, Pudupadi R. Sundararajan, Alison Way, Paul J. Gerroir, Naveen Chopra, Paul F. Smith, Rina Carlini
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Patent number: 6492082Abstract: Disclosed is a toner comprising particles of a resin and an optional colorant, said toner particles having coated thereon a polypyrrole. Another embodiment of the present invention is directed to a process which comprises (a) generating an electrostatic latent image on an imaging member, and (b) developing the latent, image by contacting the imaging member with charged toner particles comprising a resin and an optional colorant, said toner particles having coated thereon a polypyrrole.Type: GrantFiled: November 28, 2000Date of Patent: December 10, 2002Assignee: Xerox CorporationInventors: Karen A. Moffat, Rina Carlini, Maria N. V. McDougall, Dan A. Hays, Jack T. LeStrange, James R. Combes
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Patent number: 6365318Abstract: Disclosed is a process which comprises (a) dispersing into a solvent (i) toner particles comprising a resin and an optional colorant, and (ii) monomers selected from pyrroles, thiophenes, or mixtures thereof; and (b) causing, by exposure of the monomers to an oxidant, oxidative polymerization of the monomers onto the toner particles, wherein subsequent to polymerization, the toner particles are capable of being charged to a negative or positive polarity, and wherein the polarity is determined by the oxidant selected.Type: GrantFiled: November 28, 2000Date of Patent: April 2, 2002Assignee: Xerox CorporationInventors: Karen A. Moffat, Maria N. V. McDougall, James R. Combes
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Patent number: 6312861Abstract: A toner comprised of resin, colorant and a coated silica, and wherein said silica has a primary particle size of about 25 nanometers to about 55 nanometers, and an aggregate size of about 225 nanometers to about 400 nanometers, and said coating is comprised of a mixture of an alkylsilane and an aminoalkylsilane.Type: GrantFiled: October 26, 2000Date of Patent: November 6, 2001Assignee: Xerox CorporationInventors: Roger N. Ciccarelli, Denise R. Bayley, James R. Combes, Thomas R. Pickering, Jacques C. Bertrand
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Patent number: 6190815Abstract: A toner comprised of resin, colorant and a coated silica, and wherein said silica has a primary particle size of about 25 nanometers to about 55 nanometers, and an aggregate size of about 225 nanometers to about 400 nanometers, and said coating is comprised of a mixture of an alkylsilane and an aminoalkylsilane.Type: GrantFiled: August 11, 1998Date of Patent: February 20, 2001Assignee: Xerox CorporationInventors: Roger N. Ciccarelli, Denise R. Bayley, James R. Combes, Thomas R. Pickering, Jacques C. Bertrand