Patents by Inventor C. Geoffrey Allen

C. Geoffrey Allen 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).

  • Publication number: 20140071213
    Abstract: A phase change ink composition including a carrier; a colorant; and an acidic wax which is present in an amount of 0.1 to less than about 6 percent by weight based on the total weight of the phase change ink composition.
    Type: Application
    Filed: September 13, 2012
    Publication date: March 13, 2014
    Applicant: XEROX CORPORATION
    Inventors: Salma Falah Toosi, Mihaela Maria Birau, C. Geoffrey Allen, Christopher A. Wagner, Biby Esther Abraham, Peter G. Odell
  • Patent number: 8657431
    Abstract: A phase change magnetic ink including a phase change ink carrier; an optional colorant; an optional dispersant; an optional synergist; an optional antioxidant; and a carbon coated magnetic nanoparticle comprising a magnetic core and a carbon shell disposed thereover.
    Type: Grant
    Filed: March 17, 2011
    Date of Patent: February 25, 2014
    Assignee: Xerox Corporation
    Inventors: Gabriel Iftime, C. Geoffrey Allen, Peter G. Odell, Richard P. N. Veregin, Marcel P. Breton
  • Patent number: 8652575
    Abstract: A light-cyan solid ink including an ink vehicle and a colorant. The colorant includes a cyan colorant, a hue-adjusting colorant that absorbs light having a wavelength of from about 500 to about 600 nm, and an optional shade-adjusting colorant that absorbs light having a wavelength of from about 400 to about 500 nm.
    Type: Grant
    Filed: January 19, 2010
    Date of Patent: February 18, 2014
    Assignee: Xerox Corporation
    Inventors: Daryl W. Vanbesien, Edul N. Dalal, Karen A. Moffat, Raymond W. Wong, C. Geoffrey Allen, Maria Mihaela Birau, Richard P. N. Veregin, Jordan H. Wosnick, Valerie M. Farrugia
  • Patent number: 8647422
    Abstract: A phase change ink composition comprising a wax; an optional colorant; and a modified polysaccharide salt.
    Type: Grant
    Filed: November 30, 2012
    Date of Patent: February 11, 2014
    Assignee: Xerox Corporation
    Inventors: Salma Falah Toosi, Mihaela Maria Birau, Biby Esther Abraham, Christopher A. Wagner, C. Geoffrey Allen, Peter G. Odell
  • Publication number: 20140039168
    Abstract: A lignosulfonate compound for phase change ink of the formula wherein R is hydrogen or and wherein the cationic counterion+ is a nitrogen-alkyl cationic counterion, a nitrogen-aryl cationic counterion, a nitrogen-alkylaryl cationic counterion, or a nitrogen arylalkyl cationic counterion; and wherein the cationic counterion contains at least eight carbon atoms.
    Type: Application
    Filed: August 3, 2012
    Publication date: February 6, 2014
    Applicant: Xerox Corporation
    Inventors: Mihaela Maria Birau, C. Geoffrey Allen, Salma Falah Toosi, Biby Esther Abraham, Peter G. Odell
  • Publication number: 20140035994
    Abstract: A phase change ink composition includes a carrier; an optional colorant; and a lignosulfonate compound of the formula wherein R is hydrogen or and wherein the cationic counterion+ is a nitrogen-alkyl cationic counterion, a nitrogen-aryl cationic counterion, a nitrogen-alkylaryl cationic counterion, or a nitrogen arylalkyl cationic counterion; and wherein the cationic counterion contains at least eight carbon atoms.
    Type: Application
    Filed: August 3, 2012
    Publication date: February 6, 2014
    Applicant: Xerox Corporation
    Inventors: Mihaela Maria Birau, C. Geoffrey Allen, Salma Falah Toosi, Biby Esther Abraham, Peter G. Odell
  • Patent number: 8616693
    Abstract: A phase change ink composition including a wax; an optional dispersant; an optional synergist; and a naturally-derived colorant wherein the naturally-derived colorant is a colorant derived from a plant, a colorant derived from an insect, or a mixture or combination thereof.
    Type: Grant
    Filed: November 30, 2012
    Date of Patent: December 31, 2013
    Assignee: Xerox Corporation
    Inventors: Salma Falah Toosi, Mihaela Maria Birau, C. Geoffrey Allen, Biby Esther Abraham, Peter G. Odell, Caroline Turek
  • Patent number: 8617780
    Abstract: The present disclosure provides white toner compositions and processes for making same. In embodiments, a desirable white toner may be produced without having to resort to excessive pigment loading, having desirable gloss characteristics.
    Type: Grant
    Filed: August 25, 2009
    Date of Patent: December 31, 2013
    Assignee: Xerox Corporation
    Inventors: Yi Xin Gong, Daryl W. Vanbesien, Shigang Qiu, Edward Graham Zwartz, Karen Ann Moffat, Richard P. N. Veregin, Cuong Vong, C. Geoffrey Allen
  • Publication number: 20130335477
    Abstract: An in situ process for preparing a phase change magnetic ink including heating a phase change ink composition to a first temperature sufficient to provide a melt composition; wherein the phase change ink composition comprises a carrier, an optional colorant, and an optional dispersant; placing the melt composition under inert atmosphere; heating the melt composition to a second temperature sufficient to effect decomposition of a metal carbonyl; adding the metal carbonyl to the melt composition under inert atmosphere at this second temperature to form metal nanoparticles thus forming in situ a phase change magnetic ink including the metal nanoparticles; optionally, filtering the phase change magnetic ink while in a liquid state; and cooling the phase change magnetic ink to a solid state.
    Type: Application
    Filed: August 21, 2013
    Publication date: December 19, 2013
    Applicant: Xerox Corporation
    Inventors: Gabriel Iftime, C. Geoffrey Allen, Peter G. Odell, Caroline Turek
  • Patent number: 8597420
    Abstract: Solvent-based ink compositions which can be used for ink jet printing in a variety of applications. In particular, the present embodiments are directed to magnetic inks having desirable ink properties. The ink of the present embodiments comprises magnetic nanoparticles that are coated with various materials to prevent the exposure of the nanoparticles to oxygen, and provides robust prints.
    Type: Grant
    Filed: March 17, 2011
    Date of Patent: December 3, 2013
    Assignee: Xerox Corporation
    Inventors: Gabriel Iftime, Peter G. Odell, C. Geoffrey Allen, Marcel P. Breton, Richard P. N. Veregin
  • Publication number: 20130309397
    Abstract: An ink composition useful for digital offset printing applications comprises a colorant and a plurality of curable compounds. The compounds have Hansen solubility parameters as described herein, and the resulting ink composition is both compatible with certain dampening fluids and has certain rheological properties, including a low viscosity.
    Type: Application
    Filed: May 17, 2012
    Publication date: November 21, 2013
    Applicants: Palo Alto Research Center Incorporated, Xerox Corporation
    Inventors: Marcel P. Breton, Frank Ping-Hay Lee, Aurelian Valeriu Magdalinis, Bing R. Hsieh, Stephan Drappel, Timothy D. Stowe, C. Geoffrey Allen, Peter Gordon Odell
  • Publication number: 20130305946
    Abstract: An ink composition useful for digital offset printing applications comprises a fluorescent colorant and a plurality of curable compounds. The compounds have Hansen solubility parameters as described herein, and the resulting ink composition is both compatible with certain dampening fluids and has certain rheological properties, including a low viscosity. The fluorescent ink composition is useful for printing security features at high speed in short runs with customized data to produce anti-counterfeit packaging.
    Type: Application
    Filed: May 17, 2012
    Publication date: November 21, 2013
    Applicant: XEROX CORPORATION
    Inventors: Gabriel Iftime, Marcel P. Breton, Frank Ping-Hay Lee, Aurelian Valeriu Magdalinis, C. Geoffrey Allen, Peter Gordon Odell, Carolyn Moorlag
  • Patent number: 8586141
    Abstract: A nonpolar or solid (or phase change) ink composition that includes a carrier and at least one nanoscale fluorescent pigment particle composition and/or a fluorescent organic nanoparticle composition. The fluorescent organic nanoparticle composition includes a polymeric matrix obtained by modified EA latex process and/or emulsion polymerization and one or more fluorescent dyes and the nanoscale fluorescent pigment particle composition includes pigment molecules with at least one functional moiety, and a sterically bulky stabilizer compound including at least one functional group, the functional moiety of the pigment associates non-covalently with the functional group of the stabilizer.
    Type: Grant
    Filed: October 6, 2008
    Date of Patent: November 19, 2013
    Assignee: Xerox Corporation
    Inventors: Maria M. Birau, Gabriel Iftime, Daryl W. Vanbesien, Jordan H. Wosnick, Christopher A. Wagner, C. Geoffrey Allen
  • Publication number: 20130276666
    Abstract: A phase change ink composition, comprising an anti-drool additive to prevent and/or reduce printhead and nozzle contamination in ink jet printers caused by drooling and fouling of the faceplate by the ink. In particular, there is provided sulfonated small molecules for use in phase change ink compositions and which are compatible with phase change ink components.
    Type: Application
    Filed: April 23, 2012
    Publication date: October 24, 2013
    Applicant: XEROX CORPORATION
    Inventors: Mihaela Maria Birau, Salma Falah Toosi, C. Geoffrey Allen, Biby Abraham, James D. Mayo, Peter G. Odell
  • Patent number: 8545612
    Abstract: A phase change ink composition, comprising an anti-drool additive to prevent and/or reduce printhead and nozzle contamination in ink jet printers caused by drooling and fouling of the faceplate by the ink. In particular, there is provided sulfonated small molecules for use in phase change ink compositions and which are compatible with phase change ink components.
    Type: Grant
    Filed: April 23, 2012
    Date of Patent: October 1, 2013
    Assignee: Xerox Corporation
    Inventors: Mihaela Maria Birau, Salma Falah Toosi, C. Geoffrey Allen, Biby Abraham, James D. Mayo, Peter G. Odell
  • Patent number: 8544999
    Abstract: An in situ process for preparing a phase change magnetic ink including heating a phase change ink composition to a first temperature sufficient to provide a melt composition; wherein the phase change ink composition comprises a carrier, an optional colorant, and an optional dispersant; placing the melt composition under inert atmosphere; heating the melt composition to a second temperature sufficient to effect decomposition of a metal carbonyl; adding the metal carbonyl to the melt composition under inert atmosphere at this second temperature to form metal nanoparticles thus forming in situ a phase change magnetic ink including the metal nanoparticles; optionally, filtering the phase change magnetic ink while in a liquid state; and cooling the phase change magnetic ink to a solid state.
    Type: Grant
    Filed: December 22, 2010
    Date of Patent: October 1, 2013
    Assignee: Xerox Corporation
    Inventors: Gabriel Iftime, C. Geoffrey Allen, Peter G. Odell, Caroline Turek
  • Patent number: 8506040
    Abstract: A solid ink composition comprising an amorphous component, a crystalline material, and optionally, a colorant, which are suitable for ink jet printing, including printing on coated paper substrates. In embodiments, the solid ink formulation comprises a blend of an amorphous and crystalline components which provides a solid ink with excellent robustness when forming images or printing on coated paper substrates.
    Type: Grant
    Filed: April 27, 2011
    Date of Patent: August 13, 2013
    Assignee: Xerox Corporation
    Inventors: Jennifer L. Belelie, Peter G. Odell, Stephan V. Drappel, Kentaro Morimitsu, Naveen Chopra, Marcel P. Breton, Gabriel Iftime, C. Geoffrey Allen, Rina Carlini
  • Patent number: 8507041
    Abstract: An ink comprising an ink vehicle; pigment particles; and a dispersant; wherein the dispersant stabilizes the pigment particles; and wherein the dispersant is a compound of the formula or a mixture thereof, wherein R and R? are independently selected from alkyl, arylalkyl, or alkylaryl with from about 18 to about 60 carbon atoms and wherein m is an integer of from about 1 to about 30.
    Type: Grant
    Filed: December 18, 2009
    Date of Patent: August 13, 2013
    Assignee: Xerox Corporation
    Inventors: Adela Goredema, Mihaela Maria Birau, C. Geoffrey Allen, Caroline Turek, Maxine E. Haberl, Christopher Wagner, Raymond Wan-Ning Wong, Peter G. Odell
  • Patent number: 8449096
    Abstract: A synergist for pigment in a solid ink having the following formula:
    Type: Grant
    Filed: December 6, 2010
    Date of Patent: May 28, 2013
    Assignee: Xerox Corporation
    Inventors: M. Maria Birau, C. Geoffrey Allen, Marcel P. Breton, Carol A. Jennings, Caroline M. Turek, James D. Mayo, Adela Goredema, Yvonne Wong
  • Patent number: 8409341
    Abstract: Solvent-based ink compositions which can be used for ink jet printing in a variety of applications. In particular, the present embodiments are directed to magnetic inks having desirable ink properties. The ink of the present embodiments comprise magnetic nanoparticles that are coated with various materials to prevent the exposure of the nanoparticles to oxygen, and provides robust prints.
    Type: Grant
    Filed: March 17, 2011
    Date of Patent: April 2, 2013
    Assignee: Xerox Corporation
    Inventors: Gabriel Iftime, Peter G. Odell, C. Geoffrey Allen, Marcel P. Breton, Richard P. N. Veregin