Patents by Inventor Geoffrey Allen

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: 20120236064
    Abstract: A magnetic ink including an organic solvent; an optional dispersant; an optional synergist; an optional antioxidant; an optional viscosity controlling agent; an optional colorant; an optional binder; and a carbon coated magnetic nanoparticle comprising a magnetic core and a carbon shell disposed thereover.
    Type: Application
    Filed: March 17, 2011
    Publication date: September 20, 2012
    Applicant: Xerox Corporation
    Inventors: Gabriel Iftime, Peter G. Odell, C. Geoffrey Allen, Richard P.N. Veregin, Marcel P. Breton, Guiqin Song
  • Publication number: 20120227247
    Abstract: An apparatus may comprise a tool capable of holding a part during curing of the part, and a passive temperature control system. The passive temperature control system may have a phase change material selected as having a phase change temperature that may be capable of controlling heat generated by the part during curing of the part held by the tool.
    Type: Application
    Filed: May 24, 2012
    Publication date: September 13, 2012
    Applicant: The Boeing Company
    Inventors: Karl M. Nelson, Geoffrey Allen Butler
  • Patent number: 8252494
    Abstract: A fluorescent particle includes a fluorescent pigment, such as a trans-dicarboxylic-indenofluorenone, and at least one stabilizing wax chemically attached to the fluorescent pigment. The stabilizing wax includes an amine group at its terminal end and the fluorescent pigment includes at least one carboxylic acid group, where the amine group reacts with the carboxylic acid group to form an amide bond. A method for making fluorescent particles for use in toners by chemically attaching at least one stabilizing wax to a fluorescent pigment where the at least one stabilizing wax includes an amine group at its terminal end and the fluorescent pigment includes at least one carboxylic acid group. A toner may include a resin and the fluorescent particle.
    Type: Grant
    Filed: May 3, 2010
    Date of Patent: August 28, 2012
    Assignee: Xerox Corporation
    Inventors: Daryl W. Vanbesien, Maria M. Birau, C. Geoffrey Allen, Carol A. Jennings, Peter G. Odell
  • Publication number: 20120180694
    Abstract: A phase change ink compositions, comprising a novel colorant wax to prevent and/or reduce printhead and nozzle contamination in ink jet printers caused by drooling and faceplate staining. In particular, there is provided novel colorants containing acid groups for use in phase change ink compositions and which are compatible with phase change ink components.
    Type: Application
    Filed: January 18, 2011
    Publication date: July 19, 2012
    Applicant: XEROX CORPORATION
    Inventors: Maria Birau, C. Geoffrey Allen, Biby E. Abraham, Caroline M. Turek, Peter G. Odell
  • Patent number: 8222313
    Abstract: Radiation curable compositions, such as UV curable ink compositions, contain a polymeric dispersant, a curable material, that includes a carrier and at least one nanoscale fluorescent pigment particle and an optional non-fluorescent colorant. The fluorescent organic nanoparticle composition includes one or more fluorescent dyes dispersed in a polymeric matrix obtained by modified EA latex process or by emulsion polymerization. In a different embodiment, 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, and the presence of the associated stabilizer limits the extent of particle growth and aggregation, to afford nanoscale-sized pigment particles.
    Type: Grant
    Filed: October 6, 2008
    Date of Patent: July 17, 2012
    Assignee: Xerox Corporation
    Inventors: Gabriel Iftime, C. Geoffrey Allen, Maria M. Birau, Christopher A. Wagner, Daryl W. Vanbesien, Jordan H. Wosnick, Peter G. Odell
  • Publication number: 20120162330
    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: December 22, 2010
    Publication date: June 28, 2012
    Applicant: Xerox Corporation
    Inventors: Gabriel Iftime, C. Geoffrey Allen, Peter G. Odell, Caroline Turek
  • Publication number: 20120162306
    Abstract: An in situ process for preparing a phase change magnetic ink including combining a phase change ink composition with a reducing agent; wherein the phase change ink composition comprises a carrier, an optional colorant, and an optional dispersant, and wherein the reducing agent has at least one alcohol functionality; heating the combined phase ink composition and reducing agent to a first temperature sufficient to provide a melt composition; adding a metal salt to the melt composition under an inert atmosphere to provide a metal salt-melt composition; heating the metal salt-melt composition to a second temperature sufficient to effect a metal reduction reaction to reduce the metal salt to 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; cooling the phase change magnetic ink to a solid state.
    Type: Application
    Filed: December 22, 2010
    Publication date: June 28, 2012
    Applicant: Xerox Corporation
    Inventors: Gabriel Iftime, C. Geoffrey Allen, Caroline Turek, Peter G. Odell
  • Publication number: 20120140001
    Abstract: A synergist for pigment in a solid ink having the following formula: where n is 1, 2, 3, or 4, X represents a metal, ammonium, or quaternary ammonium, R1, R2, and R3 independently represent H, C1-C20 alkyl, C1-C20 alkoxy, and halogen, A solid ink including the synergist having the above formula.
    Type: Application
    Filed: December 6, 2010
    Publication date: June 7, 2012
    Applicant: XEROX CORPORATION
    Inventors: M. Maria BIRAU, C. Geoffrey ALLEN, Marcel P. BRETON, Carol A. JENNINGS, Caroline M. TUREK, James D. MAYO, Raymond W. WONG, Yvonne WONG, Adela GOREDEMA
  • Publication number: 20120077953
    Abstract: A resinous compound of the formulas or a salt thereof, wherein G1 is —X1C(O)OR1,—X2OC(O)R2, or —X2OH; G2 is R4, R12, —C(O)R2, —C(O)X1C(O)OR1, or —C(O)X2OC(O)R2; R1 is an alkyl having from 10 to 80 carbon atoms; R2 is an alkyl having from 2 to 40 carbon atoms; each R3 and R4 is independently hydrogen, alkyl, arylalkyl or alkylaryl; each R5 and each R6 is independently hydrogen or alkyl; X1 and X2 are both a straight or branched alkylene group; t1 is 1 to 20; t2 and t3 is independently 0 to 20; u1 is 1 to 30; u2 and u3 is independently 0 to 30; each R7 and each R8 is independently hydrogen, alkyl, or alkoxyl; each R9 and each R10 is independently hydrogen, alkyl, or alkoxyl; Ar is a substituted or unsubstituted aromatic moiety; p is 1 to 5; q is 1 to 12; A{circle around (?)} is selected from the group consisting of Cl?, Br?, I?, HSO4?, HSO3?, CH3SO3?, NO3?, HCOO?, CH3COO?, H2PO4?, SCN?, BF4?, ClO4?, SSO3?, PF6?, and SbCl6?; and J is alkyl, arylalkyl, or alkylaryl.
    Type: Application
    Filed: September 27, 2010
    Publication date: March 29, 2012
    Applicant: XEROX CORPORATION
    Inventors: Maria BIRAU, C. Geoffrey Allen
  • Publication number: 20120077913
    Abstract: A solid ink that includes an ink carrier and a resinous compound of the formulas or a salt thereof, wherein G1 is —X1C(O)OR1, —X2OC(O)R2, or —X2OH; G2 is R4, R12, —C(O)R2, —C(O)X1C(O)OR1, or —C(O)X2OC(O)R2, R1 is an alkyl having from 10 to 80 carbon atoms; R2 is an alkyl having from 2 to 40 carbon atoms; each R3 and R4 is independently hydrogen, alkyl, arylalkyl or alkylaryl; each R5 and each R6 is independently hydrogen or alkyl; X1 and X2 are both a straight or branched alkylene group; t1 is 1 to 20; t2 and t3 is independently 0 to 20; u1 is 1 to 30; u2 and u3 is independently 0 to 30; each R7 and each R8 is independently hydrogen, alkyl, or alkoxyl; each R9 and each R10 is independently hydrogen, alkyl, or alkoxyl; Ar is a substituted or unsubstituted aromatic moiety; p is 1 to 5; q is 1 to 12; A? is selected from the group consisting of Cl?, Br?, I?, HSO4?, HSO3?, CH3SO3?, NO3?, HCOO?, CH3COO?, H2PO4?, SCN?, ClO4?, SSO3?, PF6?, and SbCl6?; and J is alkyl, arylalkyl, or alkylaryl.
    Type: Application
    Filed: September 27, 2010
    Publication date: March 29, 2012
    Applicant: XEROX CORPORATION
    Inventors: Maria Birau, C. Geoffrey Allen, Carol A. Jennings, Peter G. Odell
  • Patent number: 8142557
    Abstract: Radiation curable phase change ink comprising an ink vehicle that includes at least one curable carrier, at least one gellant, at least one curable wax and at least one photoinitiator. In a method of forming an image with the ink, the radiation curable phase change ink is melted, then jetted onto an image receiving substrate, wherein the radiation curable phase change ink forms a gel state, and exposed to ultraviolet light to cure the curable components of the radiation curable phase change ink. The wax cures into the structure of the ink, thereby generating a robust image of excellent gloss.
    Type: Grant
    Filed: June 28, 2006
    Date of Patent: March 27, 2012
    Assignee: Xerox Corporation
    Inventors: Jennifer L. Belelie, Peter G. Odell, Eniko Toma, Christopher A. Wagner, C. Geoffrey Allen, Stephan V. Drappel
  • Patent number: 8123344
    Abstract: An ink carrier comprising a dispersion of at least one of silica nanoparticles surface modified with a hydrophobic group or metal oxide nanoparticles surface modified with a hydrophobic group exhibiting a substantially uniform distribution of said nanoparticles discretely distributed therewithin, said ink carrier being resistant to substantial aggregation of said nanoparticles distributed therewithin.
    Type: Grant
    Filed: August 4, 2008
    Date of Patent: February 28, 2012
    Assignee: Xerox Corporation
    Inventors: Adela Goredema, Maria N. V. McDougall, C. Geoffrey Allen
  • Patent number: 8123848
    Abstract: A fluorescent solid ink, and a method for making such ink, including an ink vehicle and a fluorescent particle. The fluorescent particle includes a fluorescent pigment, such as a trans-dicarboxylic-indenofluorenone, and at least one stabilizing wax chemically attached to the fluorescent pigment. The stabilizing wax includes an amine group at its terminal end and the fluorescent pigment includes at least one carboxylic acid group, where the amine group reacts with the carboxylic acid group to form an amide bond.
    Type: Grant
    Filed: May 3, 2010
    Date of Patent: February 28, 2012
    Assignee: Xerox Corporation
    Inventors: Maria M. Birau, C. Geoffrey Allen, Carol A. Jennings, Peter G. Odell
  • Patent number: 8118922
    Abstract: A pigmented phase change ink composition comprising an ink vehicle, a dispersant, and pigment particles wherein the dispersant is a chemical compound of formula: wherein R1 is an alkyl group, aryl group, alkylaryl group or arylalkyl group with at least 23 carbon atoms, R2 is an alkylene group, arylene group, alkylarylene group or arylalkylene group with at least 2 carbons and X is a quaternary ammonium salt. The ink can be resistant to substantial aggregation and settling of the pigment particles in the melt and even when exposed to freeze thaw cycles.
    Type: Grant
    Filed: May 18, 2009
    Date of Patent: February 21, 2012
    Assignee: Xerox Corporation
    Inventors: Adela Goredema, C. Geoffrey Allen, Caroline M. Turek, Christopher Wagner, Raymond Wong, Mihaela Maria Birau, Sheau Van Kao
  • Patent number: 8101801
    Abstract: Disclosed is a chemical compound having the structure: wherein R1 is an all group, aryl group, alkylaryl group or arylalkyl group with at least 23 carbon atoms, R2 is an alkylene group, arylene group, alkyarylene group or arylalkylene group with at least 2 carbons and X is a quaternary ammonium salt.
    Type: Grant
    Filed: May 18, 2009
    Date of Patent: January 24, 2012
    Assignee: Xerox Corporation
    Inventors: Adela Goredema, Aaron Strong, Peter Odell, C. Geoffrey Allen, Mihaela Maria Birau
  • Publication number: 20110278008
    Abstract: A well treatment fluid and method of use includes water, at least one hydratable polymer, an optional crosslinking agent, and a delayed release percarbonate formulation effective to reduce initial viscosity of the fluid after a period of time. Also disclosed are processes for fracturing a subterranean formation.
    Type: Application
    Filed: July 28, 2011
    Publication date: November 17, 2011
    Inventors: Carolina Hanna Matilda Andersson, Mona Ezzelarab, Cecilia Eva Maria Johansson, Carl Wilhelm Aften, Walter Philip Watson, Richard Anthony Lalama, Geoffrey Allen Monteith, Frank Schinkel
  • Publication number: 20110269065
    Abstract: A fluorescent particle includes a fluorescent pigment, such as a trans-dicarboxylic-indenofluorenone, and at least one stabilizing wax chemically attached to the fluorescent pigment. The stabilizing wax includes an amine group at its terminal end and the fluorescent pigment includes at least one carboxylic acid group, where the amine group reacts with the carboxylic acid group to form an amide bond. A method for making fluorescent particles for use in toners by chemically attaching at least one stabilizing wax to a fluorescent pigment where the at least one stabilizing wax includes an amine group at its terminal end and the fluorescent pigment includes at least one carboxylic acid group. A toner may include a resin and the fluorescent particle.
    Type: Application
    Filed: May 3, 2010
    Publication date: November 3, 2011
    Applicant: XEROX CORPORATION
    Inventors: Daryl W. VANBESIEN, Maria M. Birau, C. Geoffrey Allen, Carol A. Jennings, Peter G. Odell
  • Publication number: 20110265687
    Abstract: A fluorescent solid ink, and a method for making such ink, including an ink vehicle and a fluorescent particle. The fluorescent particle includes a fluorescent pigment, such as a trans-dicarboxylic-indenofluorenone, and at least one stabilizing wax chemically attached to the fluorescent pigment. The stabilizing wax includes an amine group at its terminal end and the fluorescent pigment includes at least one carboxylic acid group, where the amine group reacts with the carboxylic acid group to form an amide bond.
    Type: Application
    Filed: May 3, 2010
    Publication date: November 3, 2011
    Applicant: XEROX CORPORATION
    Inventors: Maria M. Birau, C. Geoffrey Allen, Carol A. Jennings
  • Patent number: 8029861
    Abstract: A phase change ink including a colorant and a carrier including a tri-ester of the formula wherein R1, R2 and R3, and n are as defined herein.
    Type: Grant
    Filed: September 23, 2008
    Date of Patent: October 4, 2011
    Assignee: Xerox Corporation
    Inventors: Adela Goredema, Caroline M. Turek, Christopher A. Wagner, C. Geoffrey Allen
  • Patent number: 8025723
    Abstract: An ink composition, such as a nonpolar liquid or phase change (solid) ink composition, that includes a non-polar carrier, and a nanoscale pigment particle composition. The nanoscale pigment particle composition includes a benzimidazolone pigment and a sterically bulky stabilizer compound, which is an alkylated-benzimidazolone compound, associated non-covalently with the benzimidazolone pigment. The presence of the associated stabilizer limits an extent of particle growth and aggregation, to afford nanoscale pigment particles.
    Type: Grant
    Filed: August 10, 2010
    Date of Patent: September 27, 2011
    Assignee: Xerox Corporation
    Inventors: Rina Carlini, C. Geoffrey Allen