Patents by Inventor Stephanie H. Tolbert

Stephanie H. Tolbert 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).

  • PHOTOCHEMICALLY STABLE, NON-LEACHING, BRIDGED POLYSILSESQUIOXANE BASED SUNSCREENS
    Publication number: 20220339091
    Abstract: Bridged polysilsesquioxane based sunscreens prepared as nanoparticles via oil/water microemulsion polymerization, sol-gel polymerizations, or a modified Stöber process. Minimized leaching and decreased levels of photo-degradation were achieved with covalent incorporation, with bridged incorporation necessary to ensure isolation of the sunscreen and any photo-products from skin. SPF values were found to be comparable to existing commercial sunscreens. Furthermore the bridged polysilsesquioxane based sunscreens can be classified as broad-spectrum, and rated from moderate to superior in terms of UVA protective ability.
    Type: Application
    Filed: May 23, 2022
    Publication date: October 27, 2022
    Inventors: Douglas A. Loy, Stephanie H. Tolbert
  • Photochemically stable, non-leaching, bridged polysilsesquioxane based sunscreens
    Patent number: 11389386
    Abstract: Bridged polysilsesquioxane based sunscreens prepared as nanoparticles via oil/water microemulsion polymerization, sol-gel polymerizations, or a modified Stober process. Minimized leaching and decreased levels of photo-degradation were achieved with covalent incorporation, with bridged incorporation necessary to ensure isolation of the sunscreen and any photo-products from skin. SPF values of were found to be comparable to existing commercial sunscreens. Furthermore the bridged polysilsesquioxane based sunscreens can be classified as broad-spectrum, and rate from moderate to superior in terms of UVA protective ability.
    Type: Grant
    Filed: January 30, 2017
    Date of Patent: July 19, 2022
    Assignee: ARIZONA BOARD OF REGENTS ON BEHALF OF THE UNIVERSITY OF ARIZONA
    Inventors: Douglas A. Loy, Stephanie H. Tolbert
  • PHOTOCHEMICALLY STABLE, NON-LEACHING, BRIDGED POLYSILSESQUIOXANE BASED SUNSCREENS
    Publication number: 20190038537
    Abstract: Bridged polysilsesquioxane based sunscreens prepared as nanoparticles via sunscreen oil/water microemulsion polymerization, sol-gel polymerizations, or a modified Stöber process. Minimized leaching and decreased levels of photo-degradation were achieved with covalent incorporation, with bridged incorporation necessary to ensure isolation of the sunscreen and any photo-products from skin. SPF values of were found to be comparable to existing commercial sunscreens. Furthermore the bridged poly-silsesquioxane based sunscreens can be classified as broad-spectrum, and rate from moderate to superior in terms of UVA protective ability.
    Type: Application
    Filed: January 30, 2017
    Publication date: February 7, 2019
    Inventors: Douglas A. Loy, Stephanie H. Tolbert