Patents by Inventor Sarah D. Hann

Sarah D. Hann 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).

  • Publication number: 20230357585
    Abstract: The present invention relates to a composition comprising an aqueous dispersion of a) polymer particles having a z-average particle size in the range of from 80 nm to 500 nm; b) polymeric crosslinked organic microspheres having a D50 particle size in the range of from 1 ?m to 30 ?m; c); a colorant and d) a zinc or zirconium compound. The composition of the present invention is useful for reducing leaching from a coating prepared from a deep base, low sheen paint formulation.
    Type: Application
    Filed: October 19, 2021
    Publication date: November 9, 2023
    Inventors: James C. Bohling, Sarah D. Hann, Philip R. Harsh, Partha S. Majumdar, Teresa A. Phillips, Thomas W. Suder
  • Publication number: 20220088556
    Abstract: In one aspect of the invention, a microcapsule includes a film encapsulating a material. The film is formed by complexation of at least two mutually attractive components initially present in an aqueous dispersion comprising a continuous phase and a dispersed phase. The at least one first component is initially present in the continuous phase and the at least one second component is initially present in the dispersed phase. According to another aspect of the invention, provided is a process for forming microcapsules including the step of injecting a dispersed phase having at least a first component into a continuous phase having at least a second component, where the first component and the second component are mutually attractive, such that a film is formed by complexation of the first charged component and the second charged component.
    Type: Application
    Filed: November 30, 2021
    Publication date: March 24, 2022
    Inventors: Daeyeon Lee, Kathleen J. Stebe, Sarah D. Hann
  • Patent number: 11260358
    Abstract: In one aspects of the invention, a microcapsule includes a film encapsulating a material. The film is formed by complexation of at least two mutually attractive components initially present in an aqueous dispersion comprising a continuous phase and a dispersed phase. The at least one first component is initially present in the continuous phase and the at least one second component is initially present in the dispersed phase. According to another aspect of the invention, provided is a process for forming microcapsules including the step of injecting a dispersed phase having at least a first component into a continuous phase having at least a second component, where the first component and the second component are mutually attractive, such that a film is formed by complexation of the first charged component and the second charged component.
    Type: Grant
    Filed: April 13, 2018
    Date of Patent: March 1, 2022
    Assignee: The Trustees of the University of Pennsylvania
    Inventors: Daeyeon Lee, Kathleen J. Stebe, Sarah D. Hann
  • Publication number: 20180297000
    Abstract: In one aspects of the invention, a microcapsule includes a film encapsulating a material. The film is formed by complexation of at least two mutually attractive components initially present in an aqueous dispersion comprising a continuous phase and a dispersed phase. The at least one first component is initially present in the continuous phase and the at least one second component is initially present in the dispersed phase. According to another aspect of the invention, provided is a process for forming microcapsules including the step of injecting a dispersed phase having at least a first component into a continuous phase having at least a second component, where the first component and the second component are mutually attractive, such that a film is formed by complexation of the first charged component and the second charged component.
    Type: Application
    Filed: April 13, 2018
    Publication date: October 18, 2018
    Applicant: The Trustees of the University of Pennsylvania
    Inventors: Daeyeon Lee, Kathleen J. Stebe, Sarah D. Hann