Patents by Inventor David K. Knoeppel

David K. Knoeppel 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).

  • Epoxy functional polystyrene for enhanced PLA miscibility
    Patent number: 9045630
    Abstract: Polystyrene blends and methods of making polystyrene blends including combining a styrene monomer and an epoxy-functional comonomer to form a combined mixture, subjecting the combined mixture to polymerization to obtain a polystyrene copolymer and combining the polystyrene copolymer with a biodegradable polymer to obtain a polystyrene blend.
    Type: Grant
    Filed: June 29, 2011
    Date of Patent: June 2, 2015
    Assignee: FINA TECHNOLOGY, INC.
    Inventors: Wei Wang, David K. Knoeppel, Fengkui Li, Jose M. Sosa
  • Epoxy Functional Polystyrene for Enhanced PLA Miscibility
    Publication number: 20130005852
    Abstract: Polystyrene blends and methods of making polystyrene blends including combining a styrene monomer and an epoxy-functional comonomer to form a combined mixture, subjecting the combined mixture to polymerization to obtain a polystyrene copolymer and combining the polystyrene copolymer with a biodegradable polymer to obtain a polystyrene blend.
    Type: Application
    Filed: June 29, 2011
    Publication date: January 3, 2013
    Applicant: Fina Technology, Inc.
    Inventors: Wei Wang, David K. Knoeppel, Fengkui Li, Jose M. Sosa