Patents by Inventor Ashley Hesslein

Ashley Hesslein 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).

  • Modified Filter Membrane and Method
    Publication number: 20200376444
    Abstract: The embodiments provide a modified filter membrane for separating a crude solution of a biological product and a viral contaminant. The filter membrane has a cellulosed based porous surface, and at least one divalent metal ion bound to the cellulose based porous surface of the filter membrane to form a modified filter membrane cellulose based porous surface, wherein the modified cellulose based porous surface separates the crude solution by retaining a viral contaminant greater than 15 nm in diameter while allowing a biological product smaller than 15 nm in diameter to pass through.
    Type: Application
    Filed: February 15, 2019
    Publication date: December 3, 2020
    Inventors: Shengjiang Liu, Wensheng Wang, Ashley Hesslein