Patents by Inventor Stephanie Christina VRAKAS

Stephanie Christina VRAKAS 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).

  • Polymer compositions stabilized with organopolysulfides
    Patent number: 11161965
    Abstract: Organopolysulfides such as organodisulfides, organotrisulfides and/or organotetrasulfides are useful stabilizers for polymer compositions, wherein the tendency of a polymer to degrade when exposed to environmental conditions such as heat, light and oxygen may be ameliorated by the incorporation of one or more of such organopolysulfides, optionally together with one or more additional stabilization additives such as a hindered phenol antioxidant, phosp(on)ite stabilizer or hindered amine light stabilizer.
    Type: Grant
    Filed: March 6, 2019
    Date of Patent: November 2, 2021
    Assignee: Arkema Inc.
    Inventors: George Charles Fortman, Jonathan Pearce Stehman, Stephanie Christina Vrakas, Kurt Wood
  • POLYMER COMPOSITIONS STABILIZED WITH ORGANOPOLYSULFIDES
    Publication number: 20190194423
    Abstract: Organopolysulfides such as organodisulfides, organotrisulfides and/or organotetrasulfides are useful stabilizers for polymer compositions, wherein the tendency of a polymer to degrade when exposed to environmental conditions such as heat, light and oxygen may be ameliorated by the incorporation of one or more of such organopolysulfides, optionally together with one or more additional stabilization additives such as a hindered phenol antioxidant, phosp(on)ite stabilizer or hindered amine light stabilizer.
    Type: Application
    Filed: March 6, 2019
    Publication date: June 27, 2019
    Inventors: George Charles Fortman, Jonathan Pearce STEHMAN, Stephanie Christina VRAKAS, Kurt WOOD