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).

  • Solid inks incorporating a polyhydroxyalkanoate compound for enhanced properties
    Patent number: 8002399
    Abstract: A solid phase change ink composition that includes at least one colorant and an ink vehicle. The ink vehicle further includes at least one polyhydroxyalkanoate compound of the below formula wherein R is independently selected from the group consisting of a hydrogen atom, a hydrocarbon group, a heteroatom, and combinations thereof, and wherein n represents the number of repeating units of from 1 to about 35,000, and wherein x represents an integer from 1 to about 5.
    Type: Grant
    Filed: December 2, 2009
    Date of Patent: August 23, 2011
    Assignee: Xerox Corporation
    Inventors: Caroline M. Turek, Gwynne Evelyn McAneney Lannen, C. Geoffrey Allen, Everett Alan Ness
  • Nonpolar liquid and solid phase change ink compositions comprising nanosized particles of benzimidazolone pigments
    Patent number: 7985290
    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 derivative of an aromatic acid, 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: July 26, 2011
    Assignee: Xerox Corporation
    Inventors: Rina Carlini, C. Geoffrey Allen
  • INK COMPOSITIONS
    Publication number: 20110177245
    Abstract: A light-magenta solid ink including an ink vehicle and a colorant. The colorant includes a magenta colorant, a hue-adjusting colorant that absorbs light having a wavelength of from about 400 to about 500 nm, and an optional shade-adjusting colorant that absorbs light having a wavelength of from about 600 to about 700 nm.
    Type: Application
    Filed: January 19, 2010
    Publication date: July 21, 2011
    Applicant: XEROX CORPORATION
    Inventors: Edul N. DALAL, Daryl W. VANBESIEN, Karen A. MOFFAT, Raymond W. WONG, C. Geoffrey ALLEN, Maria Mihaela BIRAU, Richard P.N. VEREGIN, Jordan H. WOSNICK, Valerie M. FARRUGIA
  • INK COMPOSITIONS
    Publication number: 20110177247
    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 run, and an optional shade-adjusting colorant that absorbs light having a wavelength of from about 400 to about 500 nm.
    Type: Application
    Filed: January 19, 2010
    Publication date: July 21, 2011
    Applicant: 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
  • Low molecular weight pigment dispersants for phase change ink
    Patent number: 7973186
    Abstract: Disclosed is a compound of the formula or a mixture thereof; wherein R and R? are the same or different, and wherein R and R? are independently selected from an alkyl group, an arylalkyl group, or an alkylaryl group, wherein the alkyl group, the arylalkyl group, or the alkylaryl group has 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: July 5, 2011
    Assignee: Xerox Corporation
    Inventors: Adela Goredema, Mihaela Maria Birau, C. Geoffrey Allen, Caroline Turek, Maxine E. Haberl, Carol A. Jennings, Peter G. Odell
  • LOW MOLECULAR WEIGHT PIGMENT DISPERSANTS FOR PHASE CHANGE INK
    Publication number: 20110146537
    Abstract: Disclosed is a compound of the formula or a mixture thereof; wherein R and R? are the same or different, and wherein R and R? are independently selected from an alkyl group, an arylalkyl group, or an alkylaryl group, wherein the alkyl group, the arylalkyl group, or the alkylaryl group has from about 18 to about 60 carbon atoms; and wherein m is an integer of from about 1 to about 30.
    Type: Application
    Filed: December 18, 2009
    Publication date: June 23, 2011
    Applicant: Xerox Corporation
    Inventors: Adela Goredema, Mihaela Maria Birau, C. Geoffrey Allen, Caroline Turek, Maxine E. Haberl, Carol A. Jennings, Peter G. Odell
  • Pigmented Phase Change Inks Containing Low Molecular Weight Pigment Dispersants
    Publication number: 20110151123
    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: Application
    Filed: December 18, 2009
    Publication date: June 23, 2011
    Applicant: 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
  • SOLID INKS INCORPORATING A POLYHYDROXYALKANOATE COMPOUND FOR ENHANCED PROPERTIES
    Publication number: 20110130502
    Abstract: A solid phase change ink composition that includes at least one colorant and an ink vehicle. The ink vehicle further includes at least one polyhydroxyalkanoate compound of the below formula wherein R is independently selected from the group consisting of a hydrogen atom, a hydrocarbon group, a heteroatom, and combinations thereof, and wherein n represents the number of repeating units of from 1 to about 35,000, and wherein x represents an integer from 1 to about 5.
    Type: Application
    Filed: December 2, 2009
    Publication date: June 2, 2011
    Applicant: XEROX CORPORATION
    Inventors: Caroline M. TUREK, Gwynne Evelyn MCANENEY LANNEN, C. Geoffrey ALLEN, Everett Alan NESS
  • Radiation curable ink containing a curable wax
    Patent number: 7934823
    Abstract: Curable monomer that is liquid at 25° C., curable wax and colorant together form a radiation curable ink. This ink may be used to form images by providing the radiation curable ink at a first temperature; applying the radiation curable ink to the substrate to form an image, the substrate being at a second temperature, which is below the first temperature; and exposing the radiation curable ink to radiation to cure the ink.
    Type: Grant
    Filed: May 20, 2009
    Date of Patent: May 3, 2011
    Assignee: Xerox Corporation
    Inventors: Jennifer L. Belelie, Peter G. Odell, Christopher A. Wagner, C. Geoffrey Allen
  • Biocide for well stimulation and treatment fluids
    Patent number: 7906463
    Abstract: A well stimulation fluid includes water, a polymer, and a biocide consisting of 3,5-dimethyl-1,3,5-thiadiazinane-2-thione in an amount effective to inhibit bacterial growth.
    Type: Grant
    Filed: August 2, 2006
    Date of Patent: March 15, 2011
    Assignee: Kemira Chemicals Inc.
    Inventors: Ronald Joe Starkey, II, Geoffrey Allen Monteith, Carl Wilhelm Aften
  • TONER HAVING TITANIA AND PROCESSES THEREOF
    Publication number: 20110052882
    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: Application
    Filed: August 25, 2009
    Publication date: March 3, 2011
    Applicant: 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
  • Marking material with birefringent nanoparticles
    Patent number: 7897307
    Abstract: Disclosed is a birefringent marking material comprising a vehicle for the marking material and birefringent nanoparticles having an average particle size of less than about 700 nm. The birefringent marking material, such as an ink or a toner, can be used to provide a security marking on or in an item, thereby enabling authentication of the item containing the image formed using the birefringent marking material.
    Type: Grant
    Filed: October 30, 2006
    Date of Patent: March 1, 2011
    Assignee: Xerox Corporation
    Inventors: Gabriel Iftime, Peter M. Kazmaier, C. Geoffrey Allen, Paul F. Smith
  • Nonpolar liquid and solid phase change ink compositions comprising nanosized particles of benzimidazolone pigments
    Patent number: 7857901
    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 a substituted pyridine derivative, 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: June 21, 2010
    Date of Patent: December 28, 2010
    Assignee: Xerox Corporation
    Inventors: Rina Carlini, C. Geoffrey Allen
  • NONPOLAR LIQUID AND SOLID PHASE CHANGE INK COMPOSITIONS COMPRISING NANOSIZED PARTICLES OF BENZIMIDAZOLONE PIGMENTS
    Publication number: 20100319573
    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 derivative of an aromatic acid, 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: Application
    Filed: August 10, 2010
    Publication date: December 23, 2010
    Applicant: XEROX CORPORATION
    Inventors: Rina Carlini, C. Geoffrey Allen
  • NONPOLAR LIQUID AND SOLID PHASE CHANGE INK COMPOSITIONS COMPRISING NANOSIZED PARTICLES OF BENZIMIDAZOLONE PIGMENTS
    Publication number: 20100300326
    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: Application
    Filed: August 10, 2010
    Publication date: December 2, 2010
    Applicant: XEROX CORPORATION
    Inventors: Rina CARLINI, C. Geoffrey Allen
  • LOW MOLECULAR WEIGHT QUATERNARY AMMONIUM SALT DISPERSANTS
    Publication number: 20100292467
    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: Application
    Filed: May 18, 2009
    Publication date: November 18, 2010
    Applicant: XEROX CORPORATION
    Inventors: Adela GOREDEMA, Aaron STRONG, Peter ODELL, C. Geoffrey ALLEN, Mihaela Maria BIRAU
  • PIGMENTED PHASE CHANGE INKS CONTAINING LOW MOLECULAR WEIGHT QUATERNARY AMMONIUM SALT DISPERSANTS
    Publication number: 20100288162
    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: Application
    Filed: May 18, 2009
    Publication date: November 18, 2010
    Applicant: XEROX CORPORATION
    Inventors: Adela GOREDEMA, C. Geoffrey ALLEN, Caroline M. TUREK, Christopher WAGNER, Raymond WONG, Mihaela Maria BIRAU, Sheau Van KAO
  • Non-aqueous compositions containing nanosized particles of monoazo laked pigment
    Patent number: 7834072
    Abstract: Non-aqueous disperson compositions, such as ink compositions, contain a polymeric dispersant, a polymeric resin, an organic liquid, and a nanoscale pigment particle composition including an organic monoazo laked pigment including at least one functional moiety, and a sterically bulky stabilizer compound including at least one functional group, wherein 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: November 1, 2007
    Date of Patent: November 16, 2010
    Assignee: Xerox Corporation
    Inventors: Rina Carlini, C. Geoffrey Allen, Sandra J. Gardner
  • Phase change ink compositions
    Patent number: 7812064
    Abstract: A radiation curable phase change ink comprising a white colorant; a colorant dispersant; and an ink vehicle comprising at least one curable monomer; at least one gellant; optionally at least one photoinitiator; optionally at least one stabilizer; and optionally at least one wax.
    Type: Grant
    Filed: August 7, 2007
    Date of Patent: October 12, 2010
    Assignee: Xerox Corporation
    Inventors: Peter G. Odell, Jennifer L. Belelie, Hadi K. Mahabadi, Christopher A. Wagner, C. Geoffrey Allen
  • NONPOLAR LIQUID AND SOLID PHASE CHANGE INK COMPOSITIONS COMPRISING NANOSIZED PARTICLES OF BENZIMIDAZOLONE PIGMENTS
    Publication number: 20100251928
    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 a substituted pyridine derivative, 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: Application
    Filed: June 21, 2010
    Publication date: October 7, 2010
    Applicant: XEROX CORPORATION
    Inventors: Rina CARLINI, C. Geoffrey Allen