Patents by Inventor Richard P. N. Veregin
Richard P. N. Veregin 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: 11952448Abstract: Compositions are provided which may comprise a plurality of organic additive particles, the particles comprising a polymerization product of reactants comprising a dioxane/dioxolane monomer and a vinyl co-monomer, wherein the dioxane/dioxolane monomer is an ester of (meth)acrylic acid with an alcohol comprising a dioxane moiety, an ester of (meth)acrylic acid with an alcohol comprising a dioxolane moiety, or both. Toner and additive manufacturing compositions comprising the organic additive particles are also provided.Type: GrantFiled: July 27, 2021Date of Patent: April 9, 2024Assignee: Xerox CorporationInventors: Karen A. Moffat, Sepehr M. Tehrani, Kimberly D. Nosella, Raysa Rodriguez Diaz, Richard P. N. Veregin, Cuong Vong
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Patent number: 11795333Abstract: Coating compositions are provided. In embodiments, a coating composition comprises a solvent system comprising water; a crosslinked organic additive in the form of particles and comprising a polymerization product of reactants comprising a multifunctional vinyl monomer comprising two or more vinyl groups; a binder; and optionally, one or more of a colorant and a wax. Methods of making and using the coating compositions are also provided.Type: GrantFiled: May 11, 2021Date of Patent: October 24, 2023Assignee: Xerox CorporationInventors: Richard P. N. Veregin, Kimberly D. Nosella, Majid Kamel
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Publication number: 20230159683Abstract: An organic polymeric particle including an optional first monomer comprising a hydrophobic monomer; a second monomer comprising two or more vinyl groups; an optional third monomer comprising an amine; and a vinyl siloxane polymerizable monomer.Type: ApplicationFiled: October 5, 2021Publication date: May 25, 2023Applicant: Xerox CorporationInventors: Richard P. N. Veregin, Kimberly D. Nosella, Raysa Rodriguez Diaz, Nan-Xing Hu, Majid Kamel, Cuong Vong
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Patent number: 11639053Abstract: A process including providing a three-dimensional printing powder dispersion comprising a three-dimensional printing powder, an optional dispersing agent, and water; providing an emulsion of an organic polymeric additive; combining the three-dimensional printing powder dispersion and the emulsion of organic polymeric additive to form a mixture comprising the three-dimensional printing powder dispersion and the emulsion of organic polymeric additive; and drying the mixture of the three-dimensional printing powder dispersion and the emulsion of organic polymeric additive.Type: GrantFiled: March 29, 2019Date of Patent: May 2, 2023Assignee: Xerox CorporationInventors: Richard P. N. Veregin, Karen A. Moffat, Michael Steven Hawkins, Shivanthi Easwari Sriskandha
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Patent number: 11628494Abstract: A composition including a three-dimensional metal printing powder; an organic polymeric additive on at least a portion of an external surface of the three-dimensional metal printing powder; and optionally, an inorganic additive on at least a portion of an external surface of the three-dimensional metal printing powder. A process for preparing a three-dimensional metal printing powder having an organic polymeric additive disposed thereon. A process for employing the three-dimensional metal printing powder including selective laser sintering.Type: GrantFiled: March 29, 2019Date of Patent: April 18, 2023Assignee: Xerox CorporationInventors: Richard P. N. Veregin, Karen A. Moffat
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Publication number: 20230100354Abstract: Latexes are provided which may comprise water and resin particles comprising a polymerization product of reactants comprising a dioxane/dioxolane monomer and a vinyl co-monomer, wherein the dioxane/dioxolane monomer is an ester of (meth)acrylic acid with an alcohol comprising a dioxane moiety, an ester of (meth)acrylic acid with an alcohol comprising a dioxolane moiety, or both.Type: ApplicationFiled: July 27, 2021Publication date: March 30, 2023Inventors: Karen A. Moffat, Sepehr M. Tehrani, Kimberly D. Nosella, Richard P. N. Veregin
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Publication number: 20230046647Abstract: Compositions are provided which may comprise a plurality of organic additive particles, the particles comprising a polymerization product of reactants comprising a dioxane/dioxolane monomer and a vinyl co-monomer, wherein the dioxane/dioxolane monomer is an ester of (meth)acrylic acid with an alcohol comprising a dioxane moiety, an ester of (meth)acrylic acid with an alcohol comprising a dioxolane moiety, or both. Toner and additive manufacturing compositions comprising the organic additive particles are also provided.Type: ApplicationFiled: July 27, 2021Publication date: February 16, 2023Inventors: Karen A. Moffat, Sepehr M. Tehrani, Kimberly D. Nosella, Raysa Rodriguez Diaz, Richard P. N. Veregin, Cuong Vong
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Patent number: 11579138Abstract: A method for assessing polymeric additive content A in a polymeric particle mixture may comprise determining a concentration B of a metal cation in a polymeric particle mixture comprising parent polymeric particles and polymeric additive particles, wherein the metal cation is selected from alkali earth metals and alkali metals, other than sodium (Na), and the metal cation is capable of forming a water-soluble base; determining a concentration C of the metal cation in the parent polymeric particles; determining a concentration D of the metal cation in the polymeric additive particles; and calculating a polymeric additive content A using formula A=(B?C)/D.Type: GrantFiled: December 3, 2019Date of Patent: February 14, 2023Assignee: Xerox CorporationInventors: Richard P. N. Veregin, Kimberly D. Nosella, Rosa M. Duque, Melanie Lynn Davis, David R. Kurceba, Cuong Vong
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Publication number: 20220363920Abstract: Coating compositions are provided. In embodiments, a coating composition comprises a solvent system comprising water; a crosslinked organic additive in the form of particles and comprising a polymerization product of reactants comprising a multifunctional vinyl monomer comprising two or more vinyl groups; a binder; and optionally, one or more of a colorant and a wax. Methods of making and using the coating compositions are also provided.Type: ApplicationFiled: May 11, 2021Publication date: November 17, 2022Inventors: Richard P.N. Veregin, Kimberly D. Nosella, Majid Kamel
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Publication number: 20220244656Abstract: Toner particles including a core and a shell thereover; wherein the core comprises at least one styrene-acrylate copolymer selected from styrene-acrylate copolymer 1, styrene-acrylate copolymer 2, and styrene-acrylate copolymer 3, and combinations thereof a wax; and an optional colorant; wherein the shell comprises at least one styrene-acrylate copolymer selected from styrene-acrylate copolymer 1, styrene acrylate copolymer 2, styrene acrylate copolymer 3, and combinations thereof.Type: ApplicationFiled: February 4, 2021Publication date: August 4, 2022Inventors: Jordan A. Frank, Daniel W. Asarese, Chieh-Min Cheng, Paul K. Acquaviva, Richard P. N. Veregin, Michael F. Zona
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Patent number: 11150568Abstract: A toner including toner particles comprising at least one resin, in combination with an optional colorant, and an optional wax; and a copolymer toner additive on at least a portion of an external surface of the toner particles, the copolymer toner additive comprising a first monomer having a high carbon to oxygen ratio of from about 3 to about 8; and a second monomer comprising two or more vinyl groups, wherein the second monomer is present in the copolymer in an amount of from greater than about 8 percent by weight to about 60 percent by weight, based on the weight of the copolymer; wherein the copolymer toner additive has a volume average particle diameter of from about 20 nanometers to less than about 70 nanometers. An emulsion aggregation toner process including the copolymer as a toner surface additive.Type: GrantFiled: March 29, 2019Date of Patent: October 19, 2021Assignee: Xerox CorporationInventors: Richard P. N. Veregin, Shivanthi Easwari Sriskandha, David R. Kurceba, Melanie Lynn Davis, Cuong Vong
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Patent number: 11126103Abstract: A polymeric composition including a copolymer comprising a first monomer having a high carbon to oxygen ratio of from about 3 to about 8; a second monomer comprising two or more vinyl groups, wherein the second monomer is present in the copolymer in an amount of from greater than about 8 percent by weight to about 40 percent by weight, based on the weight of the copolymer; and optionally, a third monomer comprising an amine, wherein the third monomer is present in an amount of from about 0.1 percent by weight to about 1.5 percent by weight, based on the weight of the copolymer; and a surfactant, wherein the surfactant has a minimum surface tension at critical micelle concentration of less than about 30 mN/m. A toner including the copolymer as a toner surface additive. An emulsion aggregation toner process including the copolymer as a toner surface additive.Type: GrantFiled: June 4, 2020Date of Patent: September 21, 2021Assignee: Xerox CorporationInventors: Richard P. N. Veregin, Shivanthi Easwari Sriskandha, David R. Kurceba, Scott Edward Silver, Melanie Lynn Davis, Cuong Vong
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Publication number: 20210263437Abstract: A toner including a parent toner particle comprising at least one resin, in combination with an optional colorant, and an optional wax; and a surface additive formulation comprising at least one medium silica surface additive; at least one large cross-linked organic polymeric additive; at least one positive charging surface additive, wherein the at least one positive charging surface additive is (a) a titanium dioxide surface additive; and wherein the parent toner particles further contain a small silica; or (b) a non-titanium dioxide positive charging metal oxide surface additive; and wherein the parent toner particles further optionally contain a small silica; and wherein a total surface area coverage of all of the surface additives combined is 100 to 140 percent of the parent toner particle surface area.Type: ApplicationFiled: February 25, 2020Publication date: August 26, 2021Inventors: Richard P. N. Veregin, Michael F. Zona, Jordan A. Frank, Daniel W. Asarese, Chieh-Min Cheng, Paul K. Acquaviva
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Publication number: 20210263436Abstract: A toner composition including a first wax; a second wax that is different from the first wax; wherein the first wax comprises a paraffin wax; wherein the second wax comprises a polymethylene wax; at least one polyester; and an optional colorant.Type: ApplicationFiled: February 25, 2020Publication date: August 26, 2021Inventors: Jordan A. Frank, Daniel W. Asarese, Paul K. Acquaviva, Chieh-Min Cheng, Michael F. Zona, Richard P. N. Veregin
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Publication number: 20210263435Abstract: A toner including a parent toner particle comprising at least one resin, in combination with an optional colorant, and an optional wax; and a surface additive formulation comprising at least one medium silica surface additive; at least one large silica surface additive; at least one positive charging surface additive, wherein the at least one positive charging surface additive is (a) a titanium dioxide surface additive; and wherein the parent toner particles further contain a small silica; or (b) a non-titanium dioxide positive charging metal oxide surface additive; and wherein the parent toner particles further optionally contain a small silica; and wherein a total surface area coverage of all of the surface additives combined is 100 to 140 percent of the parent toner particle surface area.Type: ApplicationFiled: February 25, 2020Publication date: August 26, 2021Inventors: Richard P. N. Veregin, Michael F. Zona, Jordan A. Frank, Daniel W. Asarese, Paul K. Acquaviva, Chieh-Min Cheng
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Patent number: 11092906Abstract: A toner including a parent toner particle comprising at least one resin, in combination with an optional colorant, and an optional wax; and a surface additive formulation comprising at least one medium silica surface additive; at least one large silica surface additive; at least one positive charging surface additive, wherein the at least one positive charging surface additive is (a) a titanium dioxide surface additive; and wherein the parent toner particles further contain a small silica; or (b) a non-titanium dioxide positive charging metal oxide surface additive; and wherein the parent toner particles further optionally contain a small silica; and wherein a total surface area coverage of all of the surface additives combined is 100 to 140 percent of the parent toner particle surface area.Type: GrantFiled: February 25, 2020Date of Patent: August 17, 2021Assignee: Xerox CorporationInventors: Richard P. N. Veregin, Michael F. Zona, Jordan A. Frank, Daniel W. Asarese, Paul K. Acquaviva, Chieh-Min Cheng
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Patent number: 11086243Abstract: A toner composition including a first wax; a second wax that is different from the first wax; wherein the first wax comprises a paraffin wax; wherein the second wax comprises a polymethylene wax; at least one polyester; and an optional colorant.Type: GrantFiled: February 25, 2020Date of Patent: August 10, 2021Assignee: Xerox CorporationInventors: Jordan A. Frank, Daniel W. Asarese, Paul K. Acquaviva, Chieh-Min Cheng, Michael F. Zona, Richard P. N. Veregin
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Patent number: 11086244Abstract: A toner including a parent toner particle comprising at least one resin, in combination with an optional colorant, and an optional wax; and a surface additive formulation comprising at least one medium silica surface additive; at least one large cross-linked organic polymeric additive; at least one positive charging surface additive, wherein the at least one positive charging surface additive is (a) a titanium dioxide surface additive; and wherein the parent toner particles further contain a small silica; or (b) a non-titanium dioxide positive charging metal oxide surface additive; and wherein the parent toner particles further optionally contain a small silica; and wherein a total surface area coverage of all of the surface additives combined is 100 to 140 percent of the parent toner particle surface area.Type: GrantFiled: February 25, 2020Date of Patent: August 10, 2021Assignee: Xerox CorporationInventors: Richard P. N. Veregin, Michael F. Zona, Jordan A. Frank, Daniel W. Asarese, Chieh-Min Cheng, Paul K. Acquaviva
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Patent number: 11048184Abstract: A toner process including a) mixing reagents comprising at least one amorphous resin, an optional crystalline resin, an optional styrene, acrylate or styrene/acrylate, an optional wax, and an optional colorant to form an emulsion comprising a resin particle; b) adding at least one aggregating agent and aggregating said resin particle to form a nascent toner particle; c) optionally, adding one or more resins to form a shell on said nascent toner particle to yield a core-shell particle; d) adding a first chelating agent and a second chelating agent; wherein said first chelating agent and said second chelating agent are different; e) freezing particle growth to form an aggregated toner particle; f) coalescing said aggregated toner particle to form a toner particle; and g) optionally, collecting said toner particle.Type: GrantFiled: January 14, 2019Date of Patent: June 29, 2021Assignee: Xerox CorporationInventors: Shivanthi Easwari Sriskandha, Richard P. N. Veregin, Guerino G. Sacripante, Edward G. Zwartz, Michael Steven Hawkins
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Patent number: RE49572Abstract: The present disclosure provides processes for producing images with toner particles. In embodiments, toner particles of a certain diameter in size are applied to a substrate as an incomplete monolayer, and then fused to form an image that is a complete monolayer and possesses a thickness less than the diameter of the particles utilized to form the image.Type: GrantFiled: November 12, 2020Date of Patent: July 4, 2023Assignee: XEROX CORPORATIONInventors: Richard P. N. Veregin, Eric Rotberg, Edward Graham Zwartz, Suxia Yang, Daryl W. Vanbesien, Cuong Vong, Karen Ann Moffat