Patents by Inventor Maria M. Birau
Maria M. Birau 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: 9279061Abstract: Disclosed is a phase change ink comprising: (a) an ink carrier comprising a compostable paraffin or polymethylene wax; and (b) a colorant.Type: GrantFiled: September 12, 2012Date of Patent: March 8, 2016Assignee: Xerox CorporationInventors: Salma F. Toosi, Maria M. Birau, Biby E. Abraham, James D. Mayo, Peter G. Odell, C. Geoffrey Allen
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Patent number: 8808437Abstract: Disclosed is a phase change ink comprising (i) an ink carrier; (ii) a quinacridone pigment; (iii) a synergist of the formula or mixtures thereof, wherein R1, R2, R3, R4, R5, R6, R7, R8, R10, R11, and x are as defined herein; and (iv) a pigment dispersant; said phase change ink being a solid at about 25° C.Type: GrantFiled: November 26, 2012Date of Patent: August 19, 2014Assignee: Xerox CorporationInventors: Maria M. Birau, C. Geoffrey Allen, Biby E. Abraham, Peter G. Odell
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Publication number: 20140144348Abstract: Disclosed is a phase change ink comprising (i) an ink carrier; (ii) a quinacridone pigment; (iii) a synergist of the formula or mixtures thereof, wherein R1, R2, R3, R4, R5, R6, R7, R8, R10, R11, and x are as defined herein; and (iv) a pigment dispersant; said phase change ink being a solid at about 25° C.Type: ApplicationFiled: November 26, 2012Publication date: May 29, 2014Applicant: XEROX CORPORATIONInventors: Maria M. Birau, C. Geoffrey Allen, Biby E. Abraham, Peter G. Odell
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Publication number: 20140073723Abstract: Disclosed is a phase change ink comprising: (a) an ink carrier comprising a compostable paraffin or polymethylene wax; and (b) a colorant.Type: ApplicationFiled: September 12, 2012Publication date: March 13, 2014Applicant: XEROX CORPORATIONInventors: Salma F. Toosi, Maria M. Birau, Biby E. Abraham, James D. Mayo, Peter G. Odell, C. Geoffrey Allen
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Patent number: 8586141Abstract: 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: GrantFiled: October 6, 2008Date of Patent: November 19, 2013Assignee: Xerox CorporationInventors: Maria M. Birau, Gabriel Iftime, Daryl W. Vanbesien, Jordan H. Wosnick, Christopher A. Wagner, C. Geoffrey Allen
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Patent number: 8541154Abstract: A method for making toners to include at least one nanoscale fluorescent pigment particle composition and/or a fluorescent organic nanoparticle composition. The particles are incorporated into emulsion of toner and used in making toner via emulsion aggregation. Such toners may have a core and/or a shell and the clay composites may be included within the core, the shell or both. 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, and the presence of the associated stabilizer limits the extent of particle growth and aggregation, to afford nanoscale-sized pigment particles.Type: GrantFiled: October 6, 2008Date of Patent: September 24, 2013Assignee: Xerox CorporationInventors: Gabriel Iftime, Daryl W. Vanbesien, Maria M. Birau, Jordan H. Wosnick, Peter M. Kazmaier
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Patent number: 8252494Abstract: 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: GrantFiled: May 3, 2010Date of Patent: August 28, 2012Assignee: Xerox CorporationInventors: Daryl W. Vanbesien, Maria M. Birau, C. Geoffrey Allen, Carol A. Jennings, Peter G. Odell
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Patent number: 8236198Abstract: A nanoscale pigment particle composition includes a fluorescent compound, such as a benzothioxanthene pigment, including at least one functional moiety, and a stabilizer compound including at least one functional group, wherein the functional moiety associates non-covalently with the functional group; and the presence of the associated stabilizer limits the extent of particle growth and aggregation, to afford nanoscale-sized particles.Type: GrantFiled: October 6, 2008Date of Patent: August 7, 2012Assignee: Xerox CorporationInventors: Maria M. Birau, Gabriel Iftime, Sandra J. Gardner, Paul F. Smith, Peter M. Kazmaier, Peter G. Odell
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Patent number: 8222313Abstract: 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: GrantFiled: October 6, 2008Date of Patent: July 17, 2012Assignee: Xerox CorporationInventors: Gabriel Iftime, C. Geoffrey Allen, Maria M. Birau, Christopher A. Wagner, Daryl W. Vanbesien, Jordan H. Wosnick, Peter G. Odell
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Patent number: 8123848Abstract: 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: GrantFiled: May 3, 2010Date of Patent: February 28, 2012Assignee: Xerox CorporationInventors: Maria M. Birau, C. Geoffrey Allen, Carol A. Jennings, Peter G. Odell
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Publication number: 20110265687Abstract: 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: ApplicationFiled: May 3, 2010Publication date: November 3, 2011Applicant: XEROX CORPORATIONInventors: Maria M. Birau, C. Geoffrey Allen, Carol A. Jennings
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Publication number: 20110269065Abstract: 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: ApplicationFiled: May 3, 2010Publication date: November 3, 2011Applicant: XEROX CORPORATIONInventors: Daryl W. VANBESIEN, Maria M. Birau, C. Geoffrey Allen, Carol A. Jennings, Peter G. Odell
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Publication number: 20100086701Abstract: 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: ApplicationFiled: October 6, 2008Publication date: April 8, 2010Applicant: XEROX CORPORATIONInventors: Gabriel IFTIME, C. Geoffrey ALLEN, Maria M. BIRAU, Christopher A. WAGNER, Daryl W. VANBESIEN, Jordan H. WOSNICK, Peter G. ODELL
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Publication number: 20100086867Abstract: A method for making toners to include at least one nanoscale fluorescent pigment particle composition and/or a fluorescent organic nanoparticle composition. The particles are incorporated into emulsion of toner and used in making toner via emulsion aggregation. Such toners may have a core and/or a shell and the clay composites may be included within the core, the shell or both. 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, and the presence of the associated stabilizer limits the extent of particle growth and aggregation, to afford nanoscale-sized pigment particles.Type: ApplicationFiled: October 6, 2008Publication date: April 8, 2010Applicant: XEROX CORPORATIONInventors: Gabriel IFTIME, Daryl W. VANBESIEN, Maria M. BIRAU, Jordan H. WOSNICK, Peter M. KAZMAIER
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Publication number: 20100083869Abstract: A nanoscale pigment particle composition includes a fluorescent compound, such as a benzothioxanthene pigment, including at least one functional moiety, and a stabilizer compound including at least one functional group, wherein the functional moiety associates non-covalently with the functional group; and the presence of the associated stabilizer limits the extent of particle growth and aggregation, to afford nanoscale-sized particles.Type: ApplicationFiled: October 6, 2008Publication date: April 8, 2010Applicant: XEROX CORPORATIONInventors: Maria M. BIRAU, Gabriel IFTIME, Sandra J. GARDNER, Paul F. SMITH, Peter M. KAZMAIER, Peter G. ODELL
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Publication number: 20100086683Abstract: 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: ApplicationFiled: October 6, 2008Publication date: April 8, 2010Applicant: XEROX CORPORATIONInventors: Maria M. BIRAU, Gabriel IFTIME, Daryl W. VANBESIEN, Jordan H. WOSNICK, Christopher A. WAGNER, C. Geoffrey ALLEN
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Publication number: 20080302272Abstract: A nonpolar or solid or phase change ink composition which includes a carrier and a nanoscale pigment particle composition, which nanoscale pigment particle composition includes a quinacridone pigment molecules including 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 particles.Type: ApplicationFiled: November 1, 2007Publication date: December 11, 2008Applicant: Xerox CorporationInventors: C. Geoffrey ALLEN, Maria M. BIRAU, Rina CARLINI, Peter G. ODELL
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Patent number: 7427324Abstract: A nanoscale pigment particle composition includes a quinacridone pigment having at least one functional moiety, and a sterically bulky stabilizer compound having at least one functional group, wherein the functional moiety associates non-covalently with the functional group; and the presence of the associated stabilizer limits the extent of particle growth and aggregation, so as to afford nanoscale-sized particles of the pigment.Type: GrantFiled: November 1, 2007Date of Patent: September 23, 2008Assignee: Xerox CorporationInventors: Maria M. Birau, Rina Carlini, Karl W. Dawson, Sandra J. Gardner, C. Geoffrey Allen, Caroline M. Turek
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Patent number: 7427323Abstract: A nanoscale pigment particle composition includes a quinacridone pigment including at least one functional moiety, and a sterically bulky stabilizer compound including at least one functional group, wherein the functional moiety associates non-covalently with the functional group; and the presence of the associated stabilizer limits the extent of particle growth and aggregation, to afford nanoscale-sized particles.Type: GrantFiled: June 7, 2007Date of Patent: September 23, 2008Assignee: Xerox CorporationInventors: Maria M. Birau, Rina Carlini, C. Geoffrey Allen, Sandra J. Gardner, Karl W. Dawson, Peter G. Odell, Paul F. Smith, Caroline M. Turek, Roger E. Gaynor, Jeffrey H. Banning