Patents by Inventor Margo Schaefer

Margo Schaefer 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).

  • Bimodal adsorbing latex
    Patent number: 9469758
    Abstract: The present invention relates to a composition comprising a stable aqueous dispersion of large acrylic based polymer particles and small acrylic based polymer particles wherein the large polymer particles comprise structural units of a phosphorus acid monomer or a salt thereof; and wherein the small polymer particles comprise a substantial absence of structural units of any phosphorus acid monomer and salts thereof. The bimodal dispersion of the present invention provides a way of making a high solids adsorbing latex with high hiding efficiency.
    Type: Grant
    Filed: July 2, 2014
    Date of Patent: October 18, 2016
    Assignees: Rohn and Haas Company, Dow Global Technologies LLC
    Inventors: James C. Bohling, Beth Cooper, Melinda H. Keefe, Margo Schaefer
  • BIMODAL ADSORBING LATEX
    Publication number: 20150011695
    Abstract: The present invention relates to a composition comprising a stable aqueous dispersion of large acrylic based polymer particles and small acrylic based polymer particles wherein the large polymer particles comprise structural units of a phosphorus acid monomer or a salt thereof; and wherein the small polymer particles comprise a substantial absence of structural units of any phosphorus acid monomer and salts thereof. The bimodal dispersion of the present invention provides a way of making a high solids adsorbing latex with high hiding efficiency.
    Type: Application
    Filed: July 2, 2014
    Publication date: January 8, 2015
    Inventors: James C. Bohling, Beth Cooper, Melinda H. Keefe, Margo Schaefer