Patents by Inventor Valerie Kuykendall

Valerie Kuykendall 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: 11643540
    Abstract: Methods for forming latexes are provided. In embodiments, such a method comprises adding a first portion of a monomer emulsion comprising water, a monomer, an acidic monomer, a multifunctional monomer, and a first reactive surfactant to a reactive surfactant solution comprising water and a second reactive surfactant to form a reaction mixture, wherein the reactive surfactant solution does not comprise monomers other than the second reactive surfactant; adding a first portion of an initiator solution to the reaction mixture so that monomers undergo polymerization reactions to form resin seeds in the reaction mixture; adding a second portion of the monomer emulsion to the reaction mixture comprising the resin seeds; and adding a second portion of the initiator solution to the reaction mixture to form a latex comprising resin particles.
    Type: Grant
    Filed: May 25, 2021
    Date of Patent: May 9, 2023
    Assignee: Xerox Corporation
    Inventors: Chunliang Lu, Valerie Kuykendall, Chieh-Min Cheng
  • Publication number: 20220380586
    Abstract: Methods for forming latexes are provided. In embodiments, such a method comprises adding a first portion of a monomer emulsion comprising water, a monomer, an acidic monomer, a multifunctional monomer, and a first reactive surfactant to a reactive surfactant solution comprising water and a second reactive surfactant to form a reaction mixture, wherein the reactive surfactant solution does not comprise monomers other than the second reactive surfactant; adding a first portion of an initiator solution to the reaction mixture so that monomers undergo polymerization reactions to form resin seeds in the reaction mixture; adding a second portion of the monomer emulsion to the reaction mixture comprising the resin seeds; and adding a second portion of the initiator solution to the reaction mixture to form a latex comprising resin particles.
    Type: Application
    Filed: May 25, 2021
    Publication date: December 1, 2022
    Inventors: Chunliang Lu, Valerie Kuykendall, Chieh-Min Cheng
  • Publication number: 20050123865
    Abstract: A method of processing photographic color papers is carried out using an aqueous single-part photographic bleach-fixing composition in a bleach-fixing step for less than 60 seconds. The single-part bleach-fixing composition has a pH of from about from about 4.4 to about 5.4. It comprises at least 0.1 mol/l of an iron ammonium-ligand photographic bleaching agent that comprises at least 95 mol % a ferric ammonium-ligand photographic bleaching agent provided that the ligand in the bleaching agent is not diethylenetriaminepentaacetic acid, at least 0.1 mol/l of a thiosulfate as the sole photographic fixing agent, and sulfite ions present in an amount sufficient to convert at least 50 mol % of the ferric ammonium-ligand photographic bleaching agent to ferrous ammonium-ligand compound within 30 days at 20 to 45° C. At least 90 mol % of the total ammonium and alkali metal cations in the bleach-fixing composition are ammonium ions.
    Type: Application
    Filed: June 23, 2004
    Publication date: June 9, 2005
    Inventors: Valerie Kuykendall, Jean Buongiorne, Susan Flavin, Eric Schmittou, Paul Schwartz