Patents by Inventor Michael Damato

Michael Damato 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).

  • In-situ method of forming zinc stearate dispersion and use thereof in toners
    Patent number: 6664018
    Abstract: A method of forming an aqueous dispersion of particles of zinc stearate includes the steps of forming a mixture of at least one surfactant and water, heating the mixture to a temperature of from about 40° C. to less than a melting temperature of zinc stearate, adding a metal-containing stearate to the mixture under agitation, adding to the mixture a solution of a zinc salt in water, whereby upon inclusion of both the metal-containing stearate and the zinc salt in the mixture, the zinc salt reacts with the metal-containing stearate to form the particles of zinc stearate, continuing the heating and agitation following completion of the latter of the adding of the solution of zinc salt or the adding of the metal-containing stearate to continue the reaction, and cooling to obtain the aqueous dispersion of particles of zinc stearate. The method forms a stable aqueous dispersion of nanometer sized zinc stearate particles particularly useful in coating toner particles.
    Type: Grant
    Filed: April 23, 2002
    Date of Patent: December 16, 2003
    Assignee: Xerox Corporation
    Inventors: Allan K. Chen, Tie Hwee Ng, Lu Jiang, Kimberly D. Nosella, Paul J. Gerroir, Michael Damato
  • In-situ method of forming zinc stearate dispersion and use thereof in toners
    Publication number: 20030198886
    Abstract: A method of forming an aqueous dispersion of particles of zinc stearate includes the steps of forming a mixture of at least one surfactant and water, heating the mixture to a temperature of from about 40° C. to less than a melting temperature of zinc stearate, adding a metal-containing stearate to the mixture under agitation, adding to the mixture a solution of a zinc salt in water, whereby upon inclusion of both the metal-containing stearate and the zinc salt in the mixture, the zinc salt reacts with the metal-containing stearate to form the particles of zinc stearate, continuing the heating and agitation following completion of the latter of the adding of the solution of zinc salt or the adding of the metal-containing stearate to continue the reaction, and cooling to obtain the aqueous dispersion of particles of zinc stearate. The method forms a stable aqueous dispersion of nanometer sized zinc stearate particles particularly useful in coating toner particles.
    Type: Application
    Filed: April 23, 2002
    Publication date: October 23, 2003
    Inventors: Allan K. Chen, Tie Hwee Ng, Lu Jiang, Kimberly D. Nosella, Paul J. Gerroir, Michael Damato