Patents by Inventor Sonja Hadzidedic
Sonja Hadzidedic 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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Publication number: 20130164668Abstract: Disclosed is a toner that includes a mixture of a bio-based amorphous polyester resin, a crystalline polyester resin, and a colorant.Type: ApplicationFiled: December 23, 2011Publication date: June 27, 2013Applicant: XEROX CORPORATIONInventors: Guerino G. Sacripante, Ke Zhou, Rosa M. Duque, Sonja Hadzidedic, Biritawit Asfaw
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Patent number: 8431306Abstract: Embodiments include a toner having a polyester resin derived from diacids and diesters, in combination with at least one diol, in embodiments a cycloaliphatic diol, an optional crystalline resin, an optional colorant, and an optional wax.Type: GrantFiled: March 9, 2010Date of Patent: April 30, 2013Assignee: Xerox CorporationInventors: Guerino G. Sacripante, Daryl W. Vanbesien, Biritawit Asfaw, Rosa M. Duque, Sonja Hadzidedic
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Publication number: 20120258397Abstract: A process for making a latex emulsion suitable for use in a toner composition includes co-emulsifying a bio-based resin with an insoluble component, such as a pigment or wax, whereby the resin encapsulates the insoluble component. The resulting latex, including the insoluble component encapsulated in the resin, may then be utilized to form a toner. The insoluble component may thus be included in toner particles, which might otherwise be difficult to achieve, using emulsion aggregation processes.Type: ApplicationFiled: April 8, 2011Publication date: October 11, 2012Applicant: XEROX CORPORATIONInventors: Ke Zhou, Sonja Hadzidedic, Guerino G. Sacripante, Kimberly D. Nosella
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Publication number: 20120258393Abstract: A process for making a latex emulsion suitable for use in a toner composition includes co-emulsifying a bio-based resin with an insoluble component, such as a pigment or wax, whereby the resin encapsulates the insoluble component. The resulting latex, including the insoluble component encapsulated in the resin, may then be utilized to form a toner. The insoluble component may thus be included in toner particles, which might otherwise be difficult to achieve, using emulsion aggregation processes.Type: ApplicationFiled: April 8, 2011Publication date: October 11, 2012Applicant: XEROX CORPORATIONInventors: Ke Zhou, Kimberly D. Nosella, Guerino G. Sacripante, Sonja Hadzidedic
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Publication number: 20120156607Abstract: Environmentally friendly toner particles are provided which may include a bio-based amorphous polyester resin, optionally in combination with another amorphous resin and/or a crystalline resin. Methods for providing these toners are also provided. In embodiments, the bio-based amorphous polyester resin is modified with a multi-functional bio-based acid, thereby providing acid-functionalized polyesters, which can be readily emulsified in emulsion aggregation processes for toner fabrication.Type: ApplicationFiled: December 21, 2010Publication date: June 21, 2012Applicant: XEROX CORPORATIONInventors: Valerie M. Farrugia, Guerino G. Sacripante, Sonja Hadzidedic
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Publication number: 20120156610Abstract: Processes for producing toners are provided. The processes include determining the desired gloss for a given toner, and determining the desired amount of aluminum in the toner to obtain that gloss. Utilizing the processes of the present disclosure, the solids content of an emulsion utilized to produce such a toner, as well as the mixing speed utilized in the aggregation process and the temperature at which aggregation of the toner particles occurs, may then be selected to obtain toner particles possessing the desired amount of aluminum, and thus the desired gloss.Type: ApplicationFiled: December 20, 2010Publication date: June 21, 2012Applicant: XEROX CORPORATIONInventors: Kimberly D. Nosella, Daryl W. Vanbesien, Allan K. Chen, Sonja Hadzidedic
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Publication number: 20110223525Abstract: Embodiments include a toner having a polyester resin derived from diacids and diesters, in combination with at least one diol, in embodiments a cycloaliphatic diol, an optional crystalline resin, an optional colorant, and an optional wax.Type: ApplicationFiled: March 9, 2010Publication date: September 15, 2011Applicant: XEROX CORPORATIONInventors: Guerino G. Sacripante, Daryl W. Vanbesien, Biritawit Asfaw, Rosa M. Duque, Sonja Hadzidedic
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Publication number: 20110027714Abstract: Toner particles are provided which may, in embodiments, include an additive package possessing both a silica that has been treated with polydimethyl siloxane and a titanium dioxide that has been subjected to a fluorine treatment. The silica that has been treated with polydimethyl siloxane has low levels of free polydimethyl siloxane. The combined additives provide toners with excellent charging characteristics and good blocking performance.Type: ApplicationFiled: July 29, 2009Publication date: February 3, 2011Applicant: XEROX CORPORATIONInventors: Maria N.V. McDougall, Richard P.N. Veregin, Wafa Bashir, Michael S. Hawkins, Eric Rotberg, Sonja Hadzidedic
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Patent number: 7749670Abstract: Embodiments include a toner with a fractionated and/or distilled wax having from about 30 to about 64 carbon units, a degree of crystallinity as calculated by heat of melting and as measured by DSC of from about 55 to about 100, a Mw is from about 500 to about 800, and a polydispersity of from about 1 to about 1.05.Type: GrantFiled: November 14, 2005Date of Patent: July 6, 2010Assignee: Xerox CorporationInventors: Raj D. Patel, David J. Sanders, T Hwee Ng, Stephan V. Drappel, Sandra J. Gardner, Sonja Hadzidedic, Louis V. Isganitis, Timothy L. Lincoln, Kevin F. Marcell
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Patent number: 7686939Abstract: Embodiments include a fractionated and/or distilled wax having from about 30 to about 64 carbon units, a degree of crystallinity as calculated by heat of melting and as measured by DSC of from about 55 to about 100, a Mw is from about 500 to about 800, and a polydispersity of from about 1 to about 1.05.Type: GrantFiled: November 14, 2005Date of Patent: March 30, 2010Assignee: Xerox CorporationInventors: Raj D. Patel, David J. Sanders, T Hwee Ng, Stephan V. Drappel, Sandra J. Gardner, Sonja Hadzidedic, Louis V. Isganitis, Timothy L. Lincoln, Kevin F. Marcell
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Patent number: 7662272Abstract: Embodiments include a distilled wax having a crystallinity of from about 55 to about 100 percent, wherein the degree of crystallinity is calculated using the following formulas: [Heat of enthalpy (Hm) J/g/294 J/g]×100=degree of crystallinity (Xc); [Heat of recrystallization (Hrc) J/g/294 J/g]×100=degree of crystallinity (Xc); and Sc/(Sc+Sa)]×100%, wherein Sc is a diffraction peak area of a crystalline component of the wax and the Sa is a diffraction peak area of an amorphous component of the wax; and wherein the Mp, Mn and Mw of the wax are all within the range of from about 500 to about 800, and wherein the wax has a polydispersity of from about 1 to about 1.05.Type: GrantFiled: November 14, 2005Date of Patent: February 16, 2010Assignee: Xerox CorporationInventors: Raj D. Patel, David J. Sanders, T Hwee Ng, Stephan V. Drappel, Sandra J. Gardner, Sonja Hadzidedic, Timothy L. Lincoln, Kevin F. Marcell, Louis V. Isganitis
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Patent number: 7553596Abstract: Embodiments include a toner with a distilled wax having a crystallinity of from about 55 to about 100 percent, wherein the degree of crystallinity is calculated using the following formulas: [Heat of enthalpy (Hm) J/g/294 J/g]×100=degree of crystallinity (Xc); [Heat of recrystallization (Hrc) J/g/294 J/g]×100=degree of crystallinity (Xc); and Sc/(Sc+Sa)]×100%, wherein Sc is a diffraction peak area of a crystalline component of the wax and the Sa is a diffraction peak area of an amorphous component of the wax; and wherein the Mp, Mn and Mw of the wax are all within the range of from about 500 to about 800, and wherein the wax has a polydispersity of from about 1 to about 1.05.Type: GrantFiled: November 14, 2005Date of Patent: June 30, 2009Assignee: Xerox CorporationInventors: Raj D. Patel, David J. Sanders, T Hwee Ng, Stephan V. Drappel, Sandra J. Gardner, Sonja Hadzidedic, Louis V. Isganitis, Timothy L. Lincoln, Kevin F. Marcell
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Publication number: 20070131580Abstract: Embodiments include a fractionated and/or distilled wax having from about 30 to about 64 carbon units, a degree of crystallinity as calculated by heat of melting and as measured by DSC of from about 55 to about 100, a Mw is from about 500 to about 800, and a polydispersity of from about 1 to about 1.05.Type: ApplicationFiled: November 14, 2005Publication date: June 14, 2007Inventors: Raj Patel, David Sanders, T. Ng, Stephan Drappel, Sandra Gardner, Sonja Hadzidedic, Louis Isganitis, Timothy Lincoln, Kevin Marcell
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Publication number: 20070108097Abstract: Embodiments include a distilled wax having a crystallinity of from about 55 to about 100 percent, wherein the degree of crystallinity is calculated using the following formulas: [Heat of enthalpy (Hm) J/g/294 J/g]×100=degree of crystallinity (Xc); [Heat of recrystallization (Hrc) J/g/294 J/g]×100=degree of crystallinity (Xc); and Sc/(Sc+Sa)]×100%, wherein Sc is a diffraction peak area of a crystalline component of the wax and the Sa is a diffraction peak area of an amorphous component of the wax; and wherein the Mp, Mn and Mw of the wax are all within the range of from about 500 to about 800, and wherein the wax has a polydispersity of from about 1 to about 1.05.Type: ApplicationFiled: November 14, 2005Publication date: May 17, 2007Inventors: Raj Patel, David Sanders, T. Ng, Stephan Drappel, Sandra Gardner, Sonja Hadzidedic, Timothy Lincoln, Kevin Marcell, Louis Isganitis
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Publication number: 20070111131Abstract: Embodiments include a toner with a distilled wax having a crystallinity of from about 55 to about 100 percent, wherein the degree of crystallinity is calculated using the following formulas: [Heat of enthalpy (Hm) J/g/294 J/g]×100 =degree of crystallinity (Xc); [Heat of recrystallization (Hrc) J/g/294 J/g]×100 =degree of crystallinity (Xc); and Sc/(Sc+Sa)]×100%, wherein Sc is a diffraction peak area of a crystalline component of the wax and the Sa is a diffraction peak area of an amorphous component of the wax; and wherein the Mp, Mn and Mw of the wax are all within the range of from about 500 to about 800, and wherein the wax has a polydispersity of from about 1 to about 1.05.Type: ApplicationFiled: November 14, 2005Publication date: May 17, 2007Inventors: Raj Patel, David Sanders, T Ng, Stephan Drappel, Sandra Gardner, Sonja Hadzidedic, Louis Isganitis, Timothy Lincoln, Kevin Marcell
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Publication number: 20070111127Abstract: Embodiments include a toner with a fractionated and/or distilled wax having from about 30 to about 64 carbon units, a degree of crystallinity as calculated by heat of melting and as measured by DSC of from about 55 to about 100, a Mw is from about 500 to about 800, and a polydispersity of from about 1 to about 1.05.Type: ApplicationFiled: November 14, 2005Publication date: May 17, 2007Inventors: Raj Patel, David Sanders, T. Ng, Stephan Drappel, Sandra Gardner, Sonja Hadzidedic, Louis Isganitis, Timothy Lincoln, Kevin Marcell
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Patent number: 5830939Abstract: There is disclosed a viscosity reduction method including: (a) forming an azeotropic mixture including water and a liquid capable of forming the azeotropic mixture with the water in a coating composition comprised of the water, a solvent, and a polymeric material selected from the group consisting of a fluorohydrocarbon polymer and a grafted elastomer composed of a polyorganosiloxane bonded to a fluoroelastomer; and (b) agitating the coating composition including the azeotropic mixture, thereby reducing the viscosity of the coating composition.Type: GrantFiled: April 25, 1996Date of Patent: November 3, 1998Assignee: Xerox CorporationInventors: Santokh S. Badesha, Robert M. Ferguson, Marko D. Saban, Sonja Hadzidedic, Arnold W. Henry, George J. Heeks, Nam S. Ro, John Abate