Patents by Inventor Sepehr M. Tehrani

Sepehr M. Tehrani 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).

  • Patent number: 12129323
    Abstract: Methods for forming latexes are provided. In an embodiment, such a method comprises adding a monomer emulsion comprising water, a monomer, an acidic monomer, a hydrophilic monomer, a difunctional monomer, a first reactive surfactant, and a chain transfer agent, to a reactive surfactant solution comprising water, a second reactive surfactant, and an initiator, at a feed rate over a period of time so that monomers of the monomer emulsion undergo polymerization reactions to form resin particles in a latex. The reactive surfactant solution does not comprise monomers other than the second reactive surfactant, the reactive surfactant solution does not comprise a resin seed, and the monomer emulsion does not comprise the resin seed. The latex is characterized by a viscosity in a range of from about 10 cP to about 100 cP as measured at a solid content of about 30% and at room temperature. The latexes are also provided.
    Type: Grant
    Filed: February 15, 2023
    Date of Patent: October 29, 2024
    Assignee: XEROX CORPORATION
    Inventor: Sepehr M. Tehrani
  • Patent number: 12061441
    Abstract: Toners are provided which may comprise toner particles, a colorant, and optionally, a wax, wherein the toner particles comprise a resin 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: Grant
    Filed: June 7, 2023
    Date of Patent: August 13, 2024
    Assignee: XEROX CORPORATION
    Inventors: Karen A. Moffat, Kimberly D. Nosella, Sepehr M. Tehrani
  • Patent number: 12043678
    Abstract: Methods for forming a latex are provided. In an embodiment, such a method comprises adding a monomer emulsion comprising water, a monomer, an acidic monomer, a multifunctional monomer, a first reactive surfactant, and a chain transfer agent, to a reactive surfactant solution comprising water, a second reactive surfactant, and an initiator, at a feed rate over a period of time so that monomers of the monomer emulsion undergo polymerization reactions to form resin particles in a latex, wherein the reactive surfactant solution does not comprise monomers other than the second reactive surfactant, the reactive surfactant solution does not comprise a resin seed, and the monomer emulsion does not comprise the resin seed. The latexes are also provided.
    Type: Grant
    Filed: April 14, 2021
    Date of Patent: July 23, 2024
    Assignee: XEROX CORPORATION
    Inventors: Sepehr M. Tehrani, Marcel P. Breton
  • Publication number: 20240240043
    Abstract: Inkjet primer compositions are provided, including those comprising water, a co-medium, and resin particles, wherein the resin particles comprise a polymerization product of reactants comprising one or more types of metal chelating monomers. Inkjet sets for inkjet printing systems are also provided including those comprising such an inkjet primer composition; and an aqueous inkjet ink composition for printing on an ink-receiving layer, the ink-receiving layer comprising the resin particles of the inkjet primer composition, the aqueous inkjet ink composition comprising water, a colorant, and additional resin particles.
    Type: Application
    Filed: January 9, 2023
    Publication date: July 18, 2024
    Inventors: Sepehr M. Tehrani, Biby Esther Abraham, Syed Mohsin Ali, Mihaela Maria Birau
  • Publication number: 20240228805
    Abstract: Inkjet primer compositions are provided, including those comprising water, a co-medium, one or more types of nanocellulose, and resin particles, wherein the resin particles comprise a polymerization product of reactants comprising one or more types of monomers. Inkjet sets for inkjet printing systems are also provided, including those comprising such an inkjet primer composition; and an aqueous inkjet ink composition for printing on an ink-receiving layer, the ink-receiving layer comprising the resin particles of the inkjet primer composition, the aqueous inkjet ink composition comprising water, a colorant, and additional resin particles.
    Type: Application
    Filed: January 9, 2023
    Publication date: July 11, 2024
    Inventors: Sepehr M. Tehrani, Syed Mohsin Ali, Biby Esther Abraham, Carlos Dondon
  • Patent number: 11952451
    Abstract: Latexes are provided which may comprise water and resin particles comprising a polymerization product of reactants comprising a dioxane/dioxolane monomer and an additional 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: Grant
    Filed: July 27, 2021
    Date of Patent: April 9, 2024
    Assignee: Xerox Corporation
    Inventor: Sepehr M. Tehrani
  • Patent number: 11952448
    Abstract: 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: Grant
    Filed: July 27, 2021
    Date of Patent: April 9, 2024
    Assignee: Xerox Corporation
    Inventors: Karen A. Moffat, Sepehr M. Tehrani, Kimberly D. Nosella, Raysa Rodriguez Diaz, Richard P. N. Veregin, Cuong Vong
  • Patent number: 11919982
    Abstract: Latex compositions are provided. In embodiments, a latex comprises water and resin particles. The resin particles comprise a polymerization product of reactants comprising one or more types of hydrophobic monomers and one or more types of acidic monomers comprising one or more types of phosphoric acid monomers, wherein a total amount of polymerized acidic monomers in the resin particles is at least about 8 weight % and a total amount of polymerized phosphoric acid monomers in the resin particles is at least about 2 weight %.
    Type: Grant
    Filed: December 9, 2021
    Date of Patent: March 5, 2024
    Inventor: Sepehr M. Tehrani
  • Patent number: 11834580
    Abstract: Ink compositions are provided which may comprise water; resin particles; a colorant; and optionally, a wax, wherein the resin particles comprise a polymerization product of reactants comprising a dioxane/dioxalane monomer and an additional monomer, wherein the dioxane/dioxalane 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 dioxalane moiety, or both.
    Type: Grant
    Filed: July 27, 2021
    Date of Patent: December 5, 2023
    Assignee: Xerox Corporation
    Inventors: Sepehr M. Tehrani, Carlos Dondon, Syed Mohsin Ali, Biby Esther Abraham, C. Geoffrey Allen, Mihaela Maria Birau, Atousa Abdollahi, Karen A. Moffat
  • Publication number: 20230332002
    Abstract: An aqueous inkjet ink composition including water; an optional co-solvent; an optional dispersant; an optional resin; an optional wax; and a BaSO4 pigment; wherein a particle size distribution is defined as Span=(Dn90?Dn10)/(Dn50); and wherein the BaSO4 pigment has a wide particle size distribution wherein the Span is 0.75 or greater.
    Type: Application
    Filed: April 18, 2022
    Publication date: October 19, 2023
    Inventors: Varun Sambhy, Santokh S. Badesha, Mihaela Maria Birau, Sepehr M. Tehrani, Syed Mohsin Ali
  • Patent number: 11781025
    Abstract: Aqueous inkjet ink compositions are provided. In an embodiment, such an aqueous inkjet ink composition comprises a solvent system comprising water, a first organic solvent, and a second organic solvent, wherein the second organic solvent is an alkanediol having from 2 to 8 carbon atoms and the second organic solvent is present at an amount of from greater than 0 weight % to about 8 weight %; a white pigment; and resin particles. Methods of making and using the aqueous inkjet ink compositions are also provided.
    Type: Grant
    Filed: May 6, 2021
    Date of Patent: October 10, 2023
    Assignee: Xerox Corporation
    Inventors: Sepehr M. Tehrani, Syed Mohsin Ali, Carlos Dondon, Biby Esther Abraham, C. Geoffrey Allen, Mihaela Maria Birau
  • Publication number: 20230314971
    Abstract: Toners are provided which may comprise toner particles, a colorant, and optionally, a wax, wherein the toner particles comprise a resin 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: Application
    Filed: June 7, 2023
    Publication date: October 5, 2023
    Inventors: Karen A. Moffat, Kimberly D. Nosella, Sepehr M. Tehrani
  • Patent number: 11714361
    Abstract: Toners are provided which may comprise toner particles, a colorant, and optionally, a wax, wherein the toner particles comprise a resin 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: Grant
    Filed: July 27, 2021
    Date of Patent: August 1, 2023
    Assignee: Xerox Corporation
    Inventors: Karen A. Moffat, Kimberly D. Nosella, Sepehr M. Tehrani
  • Patent number: 11708504
    Abstract: Aqueous inkjet ink compositions are provided. In an embodiment, such a composition comprises water; resin particles; and a colorant; wherein the resin particles comprise a polymerization product of reactants comprising a monomer, an acidic monomer, a multifunctional monomer, and a reactive surfactant, the resin particles having a D(z, ave) of no greater than about 150 nm, a D(v,90) of less than about 200 nm, and a polydispersity index (PDI) of no greater than about 0.050. Methods of forming and using the aqueous inkjet ink compositions are also provided.
    Type: Grant
    Filed: April 14, 2021
    Date of Patent: July 25, 2023
    Assignee: Xerox Corporation
    Inventors: Sepehr M. Tehrani, Marcel P. Breton, Syed Mohsin Ali, Carlos Dondon, Biby Esther Abraham, C. Geoffrey Allen, Mihaela Maria Birau
  • Publication number: 20230193053
    Abstract: A radiative cooling composition comprises a first component having >55% reflectance in a wavelength range of 0.2 to 2.5 ?m and a second component having >0.85 peak thermal emissivity for at least one wavelength in a range of 4-35 ?m. A third pigmented component of the composition is configured to emit at least a fraction of absorbed energy, and in certain embodiments the pigmented component comprises at least one phosphor.
    Type: Application
    Filed: February 15, 2023
    Publication date: June 22, 2023
    Inventors: Stephen Matthew Meckler, Eugene S. Beh, Sepehr M. Tehrani
  • Publication number: 20230192933
    Abstract: Methods for forming latexes are provided. In an embodiment, such a method comprises adding a monomer emulsion comprising water, a monomer, an acidic monomer, a hydrophilic monomer, a difunctional monomer, a first reactive surfactant, and a chain transfer agent, to a reactive surfactant solution comprising water, a second reactive surfactant, and an initiator, at a feed rate over a period of time so that monomers of the monomer emulsion undergo polymerization reactions to form resin particles in a latex. The reactive surfactant solution does not comprise monomers other than the second reactive surfactant, the reactive surfactant solution does not comprise a resin seed, and the monomer emulsion does not comprise the resin seed. The latex is characterized by a viscosity in a range of from about 10 cP to about 100 cP as measured at a solid content of about 30% and at room temperature. The latexes are also provided.
    Type: Application
    Filed: February 15, 2023
    Publication date: June 22, 2023
    Inventor: Sepehr M. Tehrani
  • Publication number: 20230183503
    Abstract: Aqueous inkjet ink compositions are provided. In embodiments, an aqueous inkjet ink composition comprises water, a colorant, resin particles, and optionally, a wax, wherein the resin particles comprise a polymerization product of reactants comprising one or more types of hydrophobic monomers; and one or more types of acidic monomers comprising one or more types of phosphoric acid monomers.
    Type: Application
    Filed: December 9, 2021
    Publication date: June 15, 2023
    Inventors: Sepehr M. Tehrani, Syed Mohsin Ali, Biby Esther Abraham, C. Geoffrey Allen, Carlos Dondon, Jennifer Kim, Mihaela Maria Birau
  • Publication number: 20230183403
    Abstract: Latex compositions are provided. In embodiments, a latex comprises water and resin particles. The resin particles comprise a polymerization product of reactants comprising one or more types of hydrophobic monomers and one or more types of acidic monomers comprising one or more types of phosphoric acid monomers, wherein a total amount of polymerized acidic monomers in the resin particles is at least about 8 weight % and a total amount of polymerized phosphoric acid monomers in the resin particles is at least about 2 weight %.
    Type: Application
    Filed: December 9, 2021
    Publication date: June 15, 2023
    Inventor: Sepehr M. Tehrani
  • Publication number: 20230100354
    Abstract: 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: Application
    Filed: July 27, 2021
    Publication date: March 30, 2023
    Inventors: Karen A. Moffat, Sepehr M. Tehrani, Kimberly D. Nosella, Richard P. N. Veregin
  • Patent number: 11608403
    Abstract: Methods for forming latexes are provided. In an embodiment, such a method comprises adding a monomer emulsion comprising water, a monomer, an acidic monomer, a hydrophilic monomer, a difunctional monomer, a first reactive surfactant, and a chain transfer agent, to a reactive surfactant solution comprising water, a second reactive surfactant, and an initiator, at a feed rate over a period of time so that monomers of the monomer emulsion undergo polymerization reactions to form resin particles in a latex. The reactive surfactant solution does not comprise monomers other than the second reactive surfactant, the reactive surfactant solution does not comprise a resin seed, and the monomer emulsion does not comprise the resin seed. The latex is characterized by a viscosity in a range of from about 10 cP to about 100 cP as measured at a solid content of about 30% and at room temperature. The latexes are also provided.
    Type: Grant
    Filed: April 14, 2021
    Date of Patent: March 21, 2023
    Assignee: Xerox Corporation
    Inventor: Sepehr M. Tehrani