Patents by Inventor Fatima M. Mayer
Fatima M. Mayer 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: 7781138Abstract: A process for preparing toner particles and compositions adapted for use in preparing toners that comprise a blend of a first polyester resin with a second sharp melting polyester resin. The process includes forming an emulsion resin comprising a branched polyester resin, a crystalline polyester resin, a colorant, and optionally a wax. The resin mixture is aggregated using an aggregating agent, such as a zinc acetate solution, to form an aggregate mixture. The aggregate mixture is then coalesced at a temperature of from about 5 to about 20° C. above the Tg of the emulsion resin to produce the resultant toner particles.Type: GrantFiled: October 6, 2009Date of Patent: August 24, 2010Assignee: Xerox CorporationInventors: Guerino G. Sacripante, Fatima M. Mayer, Kimberly D. Nosella, Valerie M. Farrugia, Raj D. Patel, Milan Maric, Allen K. Chen, Edward G. Zwartz, T. Hwee Ng
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Publication number: 20100021841Abstract: A process for preparing toner particles and compositions adapted for use in preparing toners that comprise a blend of a first polyester resin with a second sharp melting polyester resin. The process includes forming an emulsion resin comprising a branched polyester resin, a crystalline polyester resin, a colorant, and optionally a wax. The resin mixture is aggregated using an aggregating agent, such as a zinc acetate solution, to form an aggregate mixture. The aggregate mixture is then coalesced at a temperature of from about 5 to about 20° C. above the Tg of the emulsion resin to produce the resultant toner particles.Type: ApplicationFiled: October 6, 2009Publication date: January 28, 2010Applicant: Xerox CorporationInventors: Guerino G. Sacripante, Fatima M. Mayer, Kimberly D. Nosella, Valerie M. Farrugia, Raj D. Patel, Milan Maric, Allan K. Chen, Edward G. Zwartz, T. Hwee Ng
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Patent number: 7615328Abstract: A process for preparing toner particles and compositions adapted for use in preparing toners that comprise a blend of a first polyester resin with a second sharp melting polyester resin. The process includes forming an emulsion resin comprising a branched polyester resin, a crystalline polyester resin, a colorant, and optionally a wax. The resin mixture is aggregated using an aggregating agent, such as a zinc acetate solution, to form an aggregate mixture. The aggregate mixture is then coalesced at a temperature of from about 5 to about 20° C. above the Tg of the emulsion resin to produce the resultant toner particles.Type: GrantFiled: June 17, 2008Date of Patent: November 10, 2009Assignee: Xerox CorporationInventors: Guerino G. Sacripante, Fatima M. Mayer, Kimberly D. Nosella, Valerie M. Farrugia, Raj D. Patel, Milan Maric, Allen K. Chen, Edward G. Zwartz, T. Hwee Ng
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Publication number: 20090061349Abstract: A process for preparing toner particles and compositions adapted for use in preparing toners that comprise a blend of a first polyester resin with a second sharp melting polyester resin. The process includes forming an emulsion resin comprising a branched polyester resin, a crystalline polyester resin, a colorant, and optionally a wax. The resin mixture is aggregated using an aggregating agent, such as a zinc acetate solution, to form an aggregate mixture. The aggregate mixture is then coalesced at a temperature of from about 5 to about 20° C. above the Tg of the emulsion resin to produce the resultant toner particles.Type: ApplicationFiled: June 17, 2008Publication date: March 5, 2009Applicant: XEROX CORPORATIONInventors: Guerino G. Sacripante, Fatima M. Mayer, Kimberly D. Nosella, Valerie M. Farrugia, Raj D. Patel, Milan Maric, Allan K. Chen, Edward G. Zwartz, T. Hwee Ng
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Patent number: 7402371Abstract: A process for preparing toner particles and compositions adapted for use in preparing toners that comprise a blend of a first polyester resin with a second sharp melting polyester resin. The process includes forming an emulsion resin comprising a branched polyester resin, a crystalline polyester resin, a colorant, and optionally a wax. The resin mixture is aggregated using an aggregating agent, such as a zinc acetate solution, to form an aggregate mixture. The aggregate mixture is then coalesced at a temperature of from about 5 to about 20° C. above the Tg of the emulsion resin to produce the resultant toner particles.Type: GrantFiled: September 23, 2004Date of Patent: July 22, 2008Assignee: Xerox CorporationInventors: Guerino G. Sacripante, Fatima M. Mayer, Kimberly D. Nosella, Valerie M. Farrugia, Raj D. Patel, Milan Maric, Allan K. Chen, Edward G. Zwartz, T. Hwee Ng
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Patent number: 7335453Abstract: A toner composition is provider including a branched amorphous polyester resin and a crystalline polyester resin, wherein the toner possesses rheological properties yielding desired characteristics.Type: GrantFiled: October 26, 2004Date of Patent: February 26, 2008Assignee: Xerox CorporationInventors: Guerino G. Sacripante, Fatima M. Mayer, Edward G. Zwartz, Nicoleta Mihai, Valerie M. Farrugia
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Patent number: 7214463Abstract: A toner process comprised of a first heating of a mixture of an acicular magnetite dispersion, a colorant dispersion, a wax dispersion, and a core latex comprised of a first latex containing a vinyl crystalline polyester resin substantially free of crosslinking, and wherein said polyester is substantially dissolved in a vinyl monomer and polymerized to provide said first core latex resin, and which mixture contains a second crosslinked resin containing latex wherein said heating is accomplished in the presence of a coagulant to provide aggregates; adding a shell latex comprised of a polymer substantially free of crosslinking, and further heating said aggregates to provide coalesced toner particles, and wherein said further heating is at a higher temperature than said first heating.Type: GrantFiled: January 27, 2005Date of Patent: May 8, 2007Assignee: Xerox CorporationInventors: Raj D. Patel, Karen A. Moffat, Fatima M. Mayer, Allan K. Chen
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Patent number: 7208253Abstract: A toner containing a mixture of a sulfopolyester resin, a colorant and an alkyl amide.Type: GrantFiled: February 12, 2004Date of Patent: April 24, 2007Assignee: Xerox CorporationInventors: Fatima M. Mayer, Guerino G. Sacripante, Edward G. Zwartz, Nicoleta Mihai, Enno E. Agur
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Patent number: 6835768Abstract: A dispersion comprised of a wax and a hydrophilic polyester stabilizer.Type: GrantFiled: August 28, 2002Date of Patent: December 28, 2004Assignee: Xerox CorporationInventors: Enno E. Agur, Guerino G. Sacripante, Fatima M. Mayer
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Patent number: 6830860Abstract: A toner comprised of a branched amorphous resin, a crystalline resin, and a colorant.Type: GrantFiled: January 22, 2003Date of Patent: December 14, 2004Assignee: Xerox CorporationInventors: Guerino G. Sacripante, Hadi K. Mahabadi, Fatima M. Mayer, Edward G. Zwartz, T. Brian McAneney
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Publication number: 20040142266Abstract: A toner comprised of a branched amorphous resin, a crystalline resin, and a colorant.Type: ApplicationFiled: January 22, 2003Publication date: July 22, 2004Applicant: Xerox CorporationInventors: Guerino G. Sacripante, Hadi K. Mahabadi, Fatima M. Mayer, Edward G. Zwartz, T. Brian McAneney
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Publication number: 20040044108Abstract: A dispersion comprised of a wax and a hydrophilic polyester stabilizer.Type: ApplicationFiled: August 28, 2002Publication date: March 4, 2004Applicant: Xerox CorporationInventors: Enno E. Agur, Guerino G. Sacripante, Fatima M. Mayer
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Patent number: 6673500Abstract: A process comprising applying a toner security mark on a document generated by xerographic means, and which mark possesses white glossy characteristics, and wherein said toner is comprised of a waterborne polymer resin and a colorant, and optionally a second security mark generated by a toner comprised of a waterborne polymer resin and a UV fluorescent component.Type: GrantFiled: August 20, 2002Date of Patent: January 6, 2004Assignee: Xerox CorporationInventors: Raj D. Patel, Fatima M. Mayer, Michael A. Hopper, Kurt I. Halfyard
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Patent number: 6132499Abstract: An ink composition comprised of (1) a carbamate or thiourea each with a melting point of from about 60.degree. C. to about 120.degree. C. and an acoustic-loss value of from about 25 to about 80 dB/mm, (2) an alcohol compound with melting point of about 25.degree. C. to about 90.degree. C. and with an acoustic-loss value of from about 5 to about 40 dB/mm, (3) a lightfastness component, (5) an antioxidant, and (6) a colorant.Type: GrantFiled: July 29, 1999Date of Patent: October 17, 2000Assignee: Xerox CorporationInventors: Raymond W. Wong, Marcel P. Breton, Danielle C. Boils, Fatima M. Mayer, Shadi L. Malhotra
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Patent number: 5952402Abstract: An ink composition comprised of a colorant and a phase change vehicle derived from the reaction product of a resin containing at least one furan moiety and at least one maleimide moiety, and wherein said ink possesses a viscosity of from about 1 centipoise to about 20 centipoise at a temperature of from about 100.degree. C. to about 180.degree. C.Type: GrantFiled: August 21, 1998Date of Patent: September 14, 1999Assignee: Xerox CorporationInventors: Anthony J. Paine, Gordon K. Hamer, Carl P. Tripp, James P. Bareman, Fatima M. Mayer, Guerino G. Sacripante
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Patent number: 5844020Abstract: An ink composition comprised of a colorant and a phase change vehicle derived from the reaction product of a resin containing at least one furan moiety and at least one maleimide moiety, and wherein said ink possesses a viscosity of from about 1 centipoise to about 20 centipoise at a temperature of from about 100.degree. C. to about 180.degree. C.Type: GrantFiled: March 31, 1997Date of Patent: December 1, 1998Assignee: Xerox CorporationInventors: Anthony J. Paine, Gordon K. Hamer, Carl P. Tripp, James P. Bareman, Fatima M. Mayer, Guerino G. Sacripante
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Patent number: 5693128Abstract: An ink composition comprised of a colorant and a reversible crosslinked component vehicle obtained from the reaction product of an anhydride and an organoamine, and which ink possesses a viscosity of from about 1 centipoise to about 25 centipoise at a temperature of from about 125.degree. C. to about 185.degree. C.Type: GrantFiled: January 21, 1997Date of Patent: December 2, 1997Assignee: Xerox CorporationInventors: Guerino G. Sacripante, Fatima M. Mayer, Stephan V. Drappel, Anthony J. Paine, Gregory J. Kovacs